20665250

素因数分解:

$2^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{631}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 39042432

約数和(自身を除く): 18377182

約数列:

[1, 2, 5, 10, 25, 50, 125, 131, 250, 262, 631, 655, 1262, 1310, 3155, 3275, 6310, 6550, 15775, 16375, 31550, 32750, 78875, 82661, 157750, 165322, 413305, 826610, 2066525, 4133050, 10332625, 20665250]

約数ペア:

[(1, 20665250), (2, 10332625), (5, 4133050), (10, 2066525), (25, 826610), (50, 413305), (125, 165322), (131, 157750), (250, 82661), (262, 78875), (631, 32750), (655, 31550), (1262, 16375), (1310, 15775), (3155, 6550), (3275, 6310)]