20681743760

素因数分解:

$2^4\times 5^1\times {\mathrm{13669}}^1\times {\mathrm{18913}}^1$

素因数の和:32595

約数の個数: 40

約数和(自身を含む): 48091114680

約数和(自身を除く): 27409370920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 13669, 18913, 27338, 37826, 54676, 68345, 75652, 94565, 109352, 136690, 151304, 189130, 218704, 273380, 302608, 378260, 546760, 756520, 1093520, 1513040, 258521797, 517043594, 1034087188, 1292608985, 2068174376, 2585217970, 4136348752, 5170435940, 10340871880, 20681743760]

約数ペア:

[(1, 20681743760), (2, 10340871880), (4, 5170435940), (5, 4136348752), (8, 2585217970), (10, 2068174376), (16, 1292608985), (20, 1034087188), (40, 517043594), (80, 258521797), (13669, 1513040), (18913, 1093520), (27338, 756520), (37826, 546760), (54676, 378260), (68345, 302608), (75652, 273380), (94565, 218704), (109352, 189130), (136690, 151304)]