21028231617

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{383}}^1\times {\mathrm{6857}}^1$

素因数の和:7417

約数の個数: 32

約数和(自身を含む): 29958377472

約数和(自身を除く): 8930145855

約数列:

[1, 3, 17, 51, 157, 383, 471, 1149, 2669, 6511, 6857, 8007, 19533, 20571, 60131, 116569, 180393, 349707, 1022227, 1076549, 2626231, 3066681, 3229647, 7878693, 18301333, 44645927, 54903999, 133937781, 412318267, 1236954801, 7009410539, 21028231617]

約数ペア:

[(1, 21028231617), (3, 7009410539), (17, 1236954801), (51, 412318267), (157, 133937781), (383, 54903999), (471, 44645927), (1149, 18301333), (2669, 7878693), (6511, 3229647), (6857, 3066681), (8007, 2626231), (19533, 1076549), (20571, 1022227), (60131, 349707), (116569, 180393)]