400721160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6719}}^1$

素因数の和:6811

約数の個数: 128

約数和(自身を含む): 1393459200

約数和(自身を除く): 992738040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 71, 84, 105, 120, 140, 142, 168, 210, 213, 280, 284, 355, 420, 426, 497, 568, 710, 840, 852, 994, 1065, 1420, 1491, 1704, 1988, 2130, 2485, 2840, 2982, 3976, 4260, 4970, 5964, 6719, 7455, 8520, 9940, 11928, 13438, 14910, 19880, 20157, 26876, 29820, 33595, 40314, 47033, 53752, 59640, 67190, 80628, 94066, 100785, 134380, 141099, 161256, 188132, 201570, 235165, 268760, 282198, 376264, 403140, 470330, 477049, 564396, 705495, 806280, 940660, 954098, 1128792, 1410990, 1431147, 1881320, 1908196, 2385245, 2821980, 2862294, 3339343, 3816392, 4770490, 5643960, 5724588, 6678686, 7155735, 9540980, 10018029, 11449176, 13357372, 14311470, 16696715, 19081960, 20036058, 26714744, 28622940, 33393430, 40072116, 50090145, 57245880, 66786860, 80144232, 100180290, 133573720, 200360580, 400721160]

約数ペア:

[(1, 400721160), (2, 200360580), (3, 133573720), (4, 100180290), (5, 80144232), (6, 66786860), (7, 57245880), (8, 50090145), (10, 40072116), (12, 33393430), (14, 28622940), (15, 26714744), (20, 20036058), (21, 19081960), (24, 16696715), (28, 14311470), (30, 13357372), (35, 11449176), (40, 10018029), (42, 9540980), (56, 7155735), (60, 6678686), (70, 5724588), (71, 5643960), (84, 4770490), (105, 3816392), (120, 3339343), (140, 2862294), (142, 2821980), (168, 2385245), (210, 1908196), (213, 1881320), (280, 1431147), (284, 1410990), (355, 1128792), (420, 954098), (426, 940660), (497, 806280), (568, 705495), (710, 564396), (840, 477049), (852, 470330), (994, 403140), (1065, 376264), (1420, 282198), (1491, 268760), (1704, 235165), (1988, 201570), (2130, 188132), (2485, 161256), (2840, 141099), (2982, 134380), (3976, 100785), (4260, 94066), (4970, 80628), (5964, 67190), (6719, 59640), (7455, 53752), (8520, 47033), (9940, 40314), (11928, 33595), (13438, 29820), (14910, 26876), (19880, 20157)]