399291261

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1\times {\mathrm{3119}}^1$

素因数の和:3568

約数の個数: 16

約数和(自身を含む): 538137600

約数和(自身を除く): 138846339

約数列:

[1, 3, 139, 307, 417, 921, 3119, 9357, 42673, 128019, 433541, 957533, 1300623, 2872599, 133097087, 399291261]

約数ペア:

[(1, 399291261), (3, 133097087), (139, 2872599), (307, 1300623), (417, 957533), (921, 433541), (3119, 128019), (9357, 42673)]