40385020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155327}}^1$

素因数の和:155349

約数の個数: 24

約数和(自身を含む): 91332864

約数和(自身を除く): 50947844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 155327, 310654, 621308, 776635, 1553270, 2019251, 3106540, 4038502, 8077004, 10096255, 20192510, 40385020]

約数ペア:

[(1, 40385020), (2, 20192510), (4, 10096255), (5, 8077004), (10, 4038502), (13, 3106540), (20, 2019251), (26, 1553270), (52, 776635), (65, 621308), (130, 310654), (260, 155327)]