80895820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{25763}}^1$

素因数の和:25929

約数の個数: 24

約数和(自身を含む): 170969904

約数和(自身を除く): 90074084

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 25763, 51526, 103052, 128815, 257630, 515260, 4044791, 8089582, 16179164, 20223955, 40447910, 80895820]

約数ペア:

[(1, 80895820), (2, 40447910), (4, 20223955), (5, 16179164), (10, 8089582), (20, 4044791), (157, 515260), (314, 257630), (628, 128815), (785, 103052), (1570, 51526), (3140, 25763)]