18875217921

素因数分解:

$3^1\times 7^2\times {\mathrm{128402843}}^1$

素因数の和:128402860

約数の個数: 12

約数和(自身を含む): 29275848432

約数和(自身を除く): 10400630511

約数列:

[1, 3, 7, 21, 49, 147, 128402843, 385208529, 898819901, 2696459703, 6291739307, 18875217921]

約数ペア:

[(1, 18875217921), (3, 6291739307), (7, 2696459703), (21, 898819901), (49, 385208529), (147, 128402843)]