21000786640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{593}}^1\times {\mathrm{1013}}^1$

素因数の和:1661

約数の個数: 160

約数和(自身を含む): 53774772480

約数和(自身を除く): 32773985840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 593, 760, 874, 920, 1013, 1186, 1520, 1748, 1840, 2026, 2185, 2372, 2965, 3496, 4052, 4370, 4744, 5065, 5930, 6992, 8104, 8740, 9488, 10130, 11267, 11860, 13639, 16208, 17480, 19247, 20260, 22534, 23299, 23720, 27278, 34960, 38494, 40520, 45068, 46598, 47440, 54556, 56335, 68195, 76988, 81040, 90136, 93196, 96235, 109112, 112670, 116495, 136390, 153976, 180272, 186392, 192470, 218224, 225340, 232990, 259141, 272780, 307952, 372784, 384940, 442681, 450680, 465980, 518282, 545560, 600709, 769880, 885362, 901360, 931960, 1036564, 1091120, 1201418, 1295705, 1539760, 1770724, 1863920, 2073128, 2213405, 2402836, 2591410, 3003545, 3541448, 4146256, 4426810, 4805672, 5182820, 6007090, 7082896, 8853620, 9611344, 10365640, 11413471, 12014180, 13816307, 17707240, 20731280, 22826942, 24028360, 27632614, 35414480, 45653884, 48056720, 55265228, 57067355, 69081535, 91307768, 110530456, 114134710, 138163070, 182615536, 221060912, 228269420, 262509833, 276326140, 456538840, 525019666, 552652280, 913077680, 1050039332, 1105304560, 1312549165, 2100078664, 2625098330, 4200157328, 5250196660, 10500393320, 21000786640]

約数ペア:

[(1, 21000786640), (2, 10500393320), (4, 5250196660), (5, 4200157328), (8, 2625098330), (10, 2100078664), (16, 1312549165), (19, 1105304560), (20, 1050039332), (23, 913077680), (38, 552652280), (40, 525019666), (46, 456538840), (76, 276326140), (80, 262509833), (92, 228269420), (95, 221060912), (115, 182615536), (152, 138163070), (184, 114134710), (190, 110530456), (230, 91307768), (304, 69081535), (368, 57067355), (380, 55265228), (437, 48056720), (460, 45653884), (593, 35414480), (760, 27632614), (874, 24028360), (920, 22826942), (1013, 20731280), (1186, 17707240), (1520, 13816307), (1748, 12014180), (1840, 11413471), (2026, 10365640), (2185, 9611344), (2372, 8853620), (2965, 7082896), (3496, 6007090), (4052, 5182820), (4370, 4805672), (4744, 4426810), (5065, 4146256), (5930, 3541448), (6992, 3003545), (8104, 2591410), (8740, 2402836), (9488, 2213405), (10130, 2073128), (11267, 1863920), (11860, 1770724), (13639, 1539760), (16208, 1295705), (17480, 1201418), (19247, 1091120), (20260, 1036564), (22534, 931960), (23299, 901360), (23720, 885362), (27278, 769880), (34960, 600709), (38494, 545560), (40520, 518282), (45068, 465980), (46598, 450680), (47440, 442681), (54556, 384940), (56335, 372784), (68195, 307952), (76988, 272780), (81040, 259141), (90136, 232990), (93196, 225340), (96235, 218224), (109112, 192470), (112670, 186392), (116495, 180272), (136390, 153976)]