31121520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 160

約数和(自身を含む): 102850560

約数和(自身を除く): 71729040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 47, 48, 60, 62, 80, 89, 93, 94, 120, 124, 141, 155, 178, 186, 188, 235, 240, 248, 267, 282, 310, 356, 372, 376, 445, 465, 470, 496, 534, 564, 620, 705, 712, 744, 752, 890, 930, 940, 1068, 1128, 1240, 1335, 1410, 1424, 1457, 1488, 1780, 1860, 1880, 2136, 2256, 2480, 2670, 2759, 2820, 2914, 3560, 3720, 3760, 4183, 4272, 4371, 5340, 5518, 5640, 5828, 7120, 7285, 7440, 8277, 8366, 8742, 10680, 11036, 11280, 11656, 12549, 13795, 14570, 16554, 16732, 17484, 20915, 21360, 21855, 22072, 23312, 25098, 27590, 29140, 33108, 33464, 34968, 41385, 41830, 43710, 44144, 50196, 55180, 58280, 62745, 66216, 66928, 69936, 82770, 83660, 87420, 100392, 110360, 116560, 125490, 129673, 132432, 165540, 167320, 174840, 200784, 220720, 250980, 259346, 331080, 334640, 349680, 389019, 501960, 518692, 648365, 662160, 778038, 1003920, 1037384, 1296730, 1556076, 1945095, 2074768, 2593460, 3112152, 3890190, 5186920, 6224304, 7780380, 10373840, 15560760, 31121520]

約数ペア:

[(1, 31121520), (2, 15560760), (3, 10373840), (4, 7780380), (5, 6224304), (6, 5186920), (8, 3890190), (10, 3112152), (12, 2593460), (15, 2074768), (16, 1945095), (20, 1556076), (24, 1296730), (30, 1037384), (31, 1003920), (40, 778038), (47, 662160), (48, 648365), (60, 518692), (62, 501960), (80, 389019), (89, 349680), (93, 334640), (94, 331080), (120, 259346), (124, 250980), (141, 220720), (155, 200784), (178, 174840), (186, 167320), (188, 165540), (235, 132432), (240, 129673), (248, 125490), (267, 116560), (282, 110360), (310, 100392), (356, 87420), (372, 83660), (376, 82770), (445, 69936), (465, 66928), (470, 66216), (496, 62745), (534, 58280), (564, 55180), (620, 50196), (705, 44144), (712, 43710), (744, 41830), (752, 41385), (890, 34968), (930, 33464), (940, 33108), (1068, 29140), (1128, 27590), (1240, 25098), (1335, 23312), (1410, 22072), (1424, 21855), (1457, 21360), (1488, 20915), (1780, 17484), (1860, 16732), (1880, 16554), (2136, 14570), (2256, 13795), (2480, 12549), (2670, 11656), (2759, 11280), (2820, 11036), (2914, 10680), (3560, 8742), (3720, 8366), (3760, 8277), (4183, 7440), (4272, 7285), (4371, 7120), (5340, 5828), (5518, 5640)]