81220960

素因数分解:

$2^5\times 5^1\times {\mathrm{507631}}^1$

素因数の和:507646

約数の個数: 24

約数和(自身を含む): 191884896

約数和(自身を除く): 110663936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 507631, 1015262, 2030524, 2538155, 4061048, 5076310, 8122096, 10152620, 16244192, 20305240, 40610480, 81220960]

約数ペア:

[(1, 81220960), (2, 40610480), (4, 20305240), (5, 16244192), (8, 10152620), (10, 8122096), (16, 5076310), (20, 4061048), (32, 2538155), (40, 2030524), (80, 1015262), (160, 507631)]