398667880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{40351}}^1$

素因数の和:40394

約数の個数: 64

約数和(自身を含む): 1016870400

約数和(自身を除く): 618202520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 9880, 40351, 80702, 161404, 201755, 322808, 403510, 524563, 766669, 807020, 1049126, 1533338, 1614040, 2098252, 2622815, 3066676, 3833345, 4196504, 5245630, 6133352, 7666690, 9966697, 10491260, 15333380, 19933394, 20982520, 30666760, 39866788, 49833485, 79733576, 99666970, 199333940, 398667880]

約数ペア:

[(1, 398667880), (2, 199333940), (4, 99666970), (5, 79733576), (8, 49833485), (10, 39866788), (13, 30666760), (19, 20982520), (20, 19933394), (26, 15333380), (38, 10491260), (40, 9966697), (52, 7666690), (65, 6133352), (76, 5245630), (95, 4196504), (104, 3833345), (130, 3066676), (152, 2622815), (190, 2098252), (247, 1614040), (260, 1533338), (380, 1049126), (494, 807020), (520, 766669), (760, 524563), (988, 403510), (1235, 322808), (1976, 201755), (2470, 161404), (4940, 80702), (9880, 40351)]