289690040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{233621}}^1$

素因数の和:233663

約数の個数: 32

約数和(自身を含む): 672831360

約数和(自身を除く): 383141320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 233621, 467242, 934484, 1168105, 1868968, 2336210, 4672420, 7242251, 9344840, 14484502, 28969004, 36211255, 57938008, 72422510, 144845020, 289690040]

約数ペア:

[(1, 289690040), (2, 144845020), (4, 72422510), (5, 57938008), (8, 36211255), (10, 28969004), (20, 14484502), (31, 9344840), (40, 7242251), (62, 4672420), (124, 2336210), (155, 1868968), (248, 1168105), (310, 934484), (620, 467242), (1240, 233621)]