28738360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{521}}^1$

素因数の和:736

約数の個数: 64

約数和(自身を含む): 74416320

約数和(自身を除く): 45677960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 521, 788, 985, 1042, 1379, 1576, 1970, 2084, 2605, 2758, 3647, 3940, 4168, 5210, 5516, 6895, 7294, 7880, 10420, 11032, 13790, 14588, 18235, 20840, 27580, 29176, 36470, 55160, 72940, 102637, 145880, 205274, 410548, 513185, 718459, 821096, 1026370, 1436918, 2052740, 2873836, 3592295, 4105480, 5747672, 7184590, 14369180, 28738360]

約数ペア:

[(1, 28738360), (2, 14369180), (4, 7184590), (5, 5747672), (7, 4105480), (8, 3592295), (10, 2873836), (14, 2052740), (20, 1436918), (28, 1026370), (35, 821096), (40, 718459), (56, 513185), (70, 410548), (140, 205274), (197, 145880), (280, 102637), (394, 72940), (521, 55160), (788, 36470), (985, 29176), (1042, 27580), (1379, 20840), (1576, 18235), (1970, 14588), (2084, 13790), (2605, 11032), (2758, 10420), (3647, 7880), (3940, 7294), (4168, 6895), (5210, 5516)]