21920980

素因数分解:

$2^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{2347}}^1$

素因数の和:2823

約数の個数: 24

約数和(自身を含む): 46152288

約数和(自身を除く): 24231308

約数列:

[1, 2, 4, 5, 10, 20, 467, 934, 1868, 2335, 2347, 4670, 4694, 9340, 9388, 11735, 23470, 46940, 1096049, 2192098, 4384196, 5480245, 10960490, 21920980]

約数ペア:

[(1, 21920980), (2, 10960490), (4, 5480245), (5, 4384196), (10, 2192098), (20, 1096049), (467, 46940), (934, 23470), (1868, 11735), (2335, 9388), (2347, 9340), (4670, 4694)]