20123821040

素因数分解:

$2^4\times 5^1\times {\mathrm{827}}^1\times {\mathrm{304169}}^1$

素因数の和:305009

約数の個数: 40

約数和(自身を含む): 46844613360

約数和(自身を除く): 26720792320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 827, 1654, 3308, 4135, 6616, 8270, 13232, 16540, 33080, 66160, 304169, 608338, 1216676, 1520845, 2433352, 3041690, 4866704, 6083380, 12166760, 24333520, 251547763, 503095526, 1006191052, 1257738815, 2012382104, 2515477630, 4024764208, 5030955260, 10061910520, 20123821040]

約数ペア:

[(1, 20123821040), (2, 10061910520), (4, 5030955260), (5, 4024764208), (8, 2515477630), (10, 2012382104), (16, 1257738815), (20, 1006191052), (40, 503095526), (80, 251547763), (827, 24333520), (1654, 12166760), (3308, 6083380), (4135, 4866704), (6616, 3041690), (8270, 2433352), (13232, 1520845), (16540, 1216676), (33080, 608338), (66160, 304169)]