20824520

素因数分解:

$2^3\times 5^1\times {\mathrm{677}}^1\times {\mathrm{769}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 46985400

約数和(自身を除く): 26160880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 677, 769, 1354, 1538, 2708, 3076, 3385, 3845, 5416, 6152, 6770, 7690, 13540, 15380, 27080, 30760, 520613, 1041226, 2082452, 2603065, 4164904, 5206130, 10412260, 20824520]

約数ペア:

[(1, 20824520), (2, 10412260), (4, 5206130), (5, 4164904), (8, 2603065), (10, 2082452), (20, 1041226), (40, 520613), (677, 30760), (769, 27080), (1354, 15380), (1538, 13540), (2708, 7690), (3076, 6770), (3385, 6152), (3845, 5416)]