40385215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{2243}}^1$

素因数の和:2538

約数の個数: 16

約数和(自身を含む): 52401888

約数和(自身を除く): 12016673

約数列:

[1, 5, 13, 65, 277, 1385, 2243, 3601, 11215, 18005, 29159, 145795, 621311, 3106555, 8077043, 40385215]

約数ペア:

[(1, 40385215), (5, 8077043), (13, 3106555), (65, 621311), (277, 145795), (1385, 29159), (2243, 18005), (3601, 11215)]