64755280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26111}}^1$

素因数の和:26155

約数の個数: 40

約数和(自身を含む): 155418624

約数和(自身を除く): 90663344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26111, 52222, 104444, 130555, 208888, 261110, 417776, 522220, 809441, 1044440, 1618882, 2088880, 3237764, 4047205, 6475528, 8094410, 12951056, 16188820, 32377640, 64755280]

約数ペア:

[(1, 64755280), (2, 32377640), (4, 16188820), (5, 12951056), (8, 8094410), (10, 6475528), (16, 4047205), (20, 3237764), (31, 2088880), (40, 1618882), (62, 1044440), (80, 809441), (124, 522220), (155, 417776), (248, 261110), (310, 208888), (496, 130555), (620, 104444), (1240, 52222), (2480, 26111)]