81781160

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70501}}^1$

素因数の和:70541

約数の個数: 32

約数和(自身を含む): 190355400

約数和(自身を除く): 108574240

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70501, 141002, 282004, 352505, 564008, 705010, 1410020, 2044529, 2820040, 4089058, 8178116, 10222645, 16356232, 20445290, 40890580, 81781160]

約数ペア:

[(1, 81781160), (2, 40890580), (4, 20445290), (5, 16356232), (8, 10222645), (10, 8178116), (20, 4089058), (29, 2820040), (40, 2044529), (58, 1410020), (116, 705010), (145, 564008), (232, 352505), (290, 282004), (580, 141002), (1160, 70501)]