81131000

素因数分解:

$2^3\times 5^3\times {\mathrm{81131}}^1$

素因数の和:81152

約数の個数: 32

約数和(自身を含む): 189848880

約数和(自身を除く): 108717880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 81131, 162262, 324524, 405655, 649048, 811310, 1622620, 2028275, 3245240, 4056550, 8113100, 10141375, 16226200, 20282750, 40565500, 81131000]

約数ペア:

[(1, 81131000), (2, 40565500), (4, 20282750), (5, 16226200), (8, 10141375), (10, 8113100), (20, 4056550), (25, 3245240), (40, 2028275), (50, 1622620), (100, 811310), (125, 649048), (200, 405655), (250, 324524), (500, 162262), (1000, 81131)]