20218993921

素因数分解:

$7^2\times {\mathrm{503}}^1\times {\mathrm{820343}}^1$

素因数の和:820860

約数の個数: 12

約数和(自身を含む): 23566842432

約数和(自身を除く): 3347848511

約数列:

[1, 7, 49, 503, 3521, 24647, 820343, 5742401, 40196807, 412632529, 2888427703, 20218993921]

約数ペア:

[(1, 20218993921), (7, 2888427703), (49, 412632529), (503, 40196807), (3521, 5742401), (24647, 820343)]