639441960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:256

約数の個数: 256

約数和(自身を含む): 2128896000

約数和(自身を除く): 1489454040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 31, 38, 40, 57, 60, 62, 76, 83, 93, 95, 109, 114, 120, 124, 152, 155, 166, 186, 190, 218, 228, 248, 249, 285, 310, 327, 332, 372, 380, 415, 436, 456, 465, 498, 545, 570, 589, 620, 654, 664, 744, 760, 830, 872, 930, 996, 1090, 1140, 1178, 1240, 1245, 1308, 1577, 1635, 1660, 1767, 1860, 1992, 2071, 2180, 2280, 2356, 2490, 2573, 2616, 2945, 3154, 3270, 3320, 3379, 3534, 3720, 4142, 4360, 4712, 4731, 4980, 5146, 5890, 6213, 6308, 6540, 6758, 7068, 7719, 7885, 8284, 8835, 9047, 9462, 9960, 10137, 10292, 10355, 11780, 12426, 12616, 12865, 13080, 13516, 14136, 15438, 15770, 16568, 16895, 17670, 18094, 18924, 20274, 20584, 20710, 23560, 23655, 24852, 25730, 27032, 27141, 30876, 31065, 31540, 33790, 35340, 36188, 37848, 38595, 40548, 41420, 45235, 47310, 48887, 49704, 50685, 51460, 54282, 61752, 62130, 63080, 64201, 67580, 70680, 72376, 77190, 81096, 82840, 90470, 94620, 97774, 101370, 102920, 108564, 124260, 128402, 135160, 135705, 146661, 154380, 171893, 180940, 189240, 192603, 195548, 202740, 217128, 244435, 248520, 256804, 271410, 280457, 293322, 308760, 321005, 343786, 361880, 385206, 391096, 405480, 488870, 513608, 515679, 542820, 560914, 586644, 642010, 687572, 733305, 770412, 841371, 859465, 963015, 977740, 1031358, 1085640, 1121828, 1173288, 1284020, 1375144, 1402285, 1466610, 1540824, 1682742, 1718930, 1926030, 1955480, 2062716, 2243656, 2568040, 2578395, 2804570, 2933220, 3365484, 3437860, 3852060, 4125432, 4206855, 5156790, 5328683, 5609140, 5866440, 6730968, 6875720, 7704120, 8413710, 10313580, 10657366, 11218280, 15986049, 16827420, 20627160, 21314732, 26643415, 31972098, 33654840, 42629464, 53286830, 63944196, 79930245, 106573660, 127888392, 159860490, 213147320, 319720980, 639441960]

約数ペア:

[(1, 639441960), (2, 319720980), (3, 213147320), (4, 159860490), (5, 127888392), (6, 106573660), (8, 79930245), (10, 63944196), (12, 53286830), (15, 42629464), (19, 33654840), (20, 31972098), (24, 26643415), (30, 21314732), (31, 20627160), (38, 16827420), (40, 15986049), (57, 11218280), (60, 10657366), (62, 10313580), (76, 8413710), (83, 7704120), (93, 6875720), (95, 6730968), (109, 5866440), (114, 5609140), (120, 5328683), (124, 5156790), (152, 4206855), (155, 4125432), (166, 3852060), (186, 3437860), (190, 3365484), (218, 2933220), (228, 2804570), (248, 2578395), (249, 2568040), (285, 2243656), (310, 2062716), (327, 1955480), (332, 1926030), (372, 1718930), (380, 1682742), (415, 1540824), (436, 1466610), (456, 1402285), (465, 1375144), (498, 1284020), (545, 1173288), (570, 1121828), (589, 1085640), (620, 1031358), (654, 977740), (664, 963015), (744, 859465), (760, 841371), (830, 770412), (872, 733305), (930, 687572), (996, 642010), (1090, 586644), (1140, 560914), (1178, 542820), (1240, 515679), (1245, 513608), (1308, 488870), (1577, 405480), (1635, 391096), (1660, 385206), (1767, 361880), (1860, 343786), (1992, 321005), (2071, 308760), (2180, 293322), (2280, 280457), (2356, 271410), (2490, 256804), (2573, 248520), (2616, 244435), (2945, 217128), (3154, 202740), (3270, 195548), (3320, 192603), (3379, 189240), (3534, 180940), (3720, 171893), (4142, 154380), (4360, 146661), (4712, 135705), (4731, 135160), (4980, 128402), (5146, 124260), (5890, 108564), (6213, 102920), (6308, 101370), (6540, 97774), (6758, 94620), (7068, 90470), (7719, 82840), (7885, 81096), (8284, 77190), (8835, 72376), (9047, 70680), (9462, 67580), (9960, 64201), (10137, 63080), (10292, 62130), (10355, 61752), (11780, 54282), (12426, 51460), (12616, 50685), (12865, 49704), (13080, 48887), (13516, 47310), (14136, 45235), (15438, 41420), (15770, 40548), (16568, 38595), (16895, 37848), (17670, 36188), (18094, 35340), (18924, 33790), (20274, 31540), (20584, 31065), (20710, 30876), (23560, 27141), (23655, 27032), (24852, 25730)]