256971345

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{280843}}^1$

素因数の和:280912

約数の個数: 16

約数和(自身を含む): 417895872

約数和(自身を除く): 160924527

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 280843, 842529, 1404215, 4212645, 17131423, 51394269, 85657115, 256971345]

約数ペア:

[(1, 256971345), (3, 85657115), (5, 51394269), (15, 17131423), (61, 4212645), (183, 1404215), (305, 842529), (915, 280843)]