80490500

素因数分解:

$2^2\times 5^3\times {\mathrm{160981}}^1$

素因数の和:161000

約数の個数: 24

約数和(自身を含む): 175792344

約数和(自身を除く): 95301844

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 160981, 321962, 643924, 804905, 1609810, 3219620, 4024525, 8049050, 16098100, 20122625, 40245250, 80490500]

約数ペア:

[(1, 80490500), (2, 40245250), (4, 20122625), (5, 16098100), (10, 8049050), (20, 4024525), (25, 3219620), (50, 1609810), (100, 804905), (125, 643924), (250, 321962), (500, 160981)]