138617560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{48809}}^1$

素因数の和:48891

約数の個数: 32

約数和(自身を含む): 316288800

約数和(自身を除く): 177671240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 48809, 97618, 195236, 244045, 390472, 488090, 976180, 1952360, 3465439, 6930878, 13861756, 17327195, 27723512, 34654390, 69308780, 138617560]

約数ペア:

[(1, 138617560), (2, 69308780), (4, 34654390), (5, 27723512), (8, 17327195), (10, 13861756), (20, 6930878), (40, 3465439), (71, 1952360), (142, 976180), (284, 488090), (355, 390472), (568, 244045), (710, 195236), (1420, 97618), (2840, 48809)]