81615680

素因数分解:

$2^6\times 5^1\times {\mathrm{255049}}^1$

素因数の和:255066

約数の個数: 28

約数和(自身を含む): 194348100

約数和(自身を除く): 112732420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 255049, 510098, 1020196, 1275245, 2040392, 2550490, 4080784, 5100980, 8161568, 10201960, 16323136, 20403920, 40807840, 81615680]

約数ペア:

[(1, 81615680), (2, 40807840), (4, 20403920), (5, 16323136), (8, 10201960), (10, 8161568), (16, 5100980), (20, 4080784), (32, 2550490), (40, 2040392), (64, 1275245), (80, 1020196), (160, 510098), (320, 255049)]