80688040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65071}}^1$

素因数の和:65113

約数の個数: 32

約数和(自身を含む): 187407360

約数和(自身を除く): 106719320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 65071, 130142, 260284, 325355, 520568, 650710, 1301420, 2017201, 2602840, 4034402, 8068804, 10086005, 16137608, 20172010, 40344020, 80688040]

約数ペア:

[(1, 80688040), (2, 40344020), (4, 20172010), (5, 16137608), (8, 10086005), (10, 8068804), (20, 4034402), (31, 2602840), (40, 2017201), (62, 1301420), (124, 650710), (155, 520568), (248, 325355), (310, 260284), (620, 130142), (1240, 65071)]