83355640

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{3251}}^1$

素因数の和:3903

約数の個数: 32

約数和(自身を含む): 187900560

約数和(自身を除く): 104544920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 3251, 5128, 6410, 6502, 12820, 13004, 16255, 25640, 26008, 32510, 65020, 130040, 2083891, 4167782, 8335564, 10419455, 16671128, 20838910, 41677820, 83355640]

約数ペア:

[(1, 83355640), (2, 41677820), (4, 20838910), (5, 16671128), (8, 10419455), (10, 8335564), (20, 4167782), (40, 2083891), (641, 130040), (1282, 65020), (2564, 32510), (3205, 26008), (3251, 25640), (5128, 16255), (6410, 13004), (6502, 12820)]