40080820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154157}}^1$

素因数の和:154179

約数の個数: 24

約数和(自身を含む): 90644904

約数和(自身を除く): 50564084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 154157, 308314, 616628, 770785, 1541570, 2004041, 3083140, 4008082, 8016164, 10020205, 20040410, 40080820]

約数ペア:

[(1, 40080820), (2, 20040410), (4, 10020205), (5, 8016164), (10, 4008082), (13, 3083140), (20, 2004041), (26, 1541570), (52, 770785), (65, 616628), (130, 308314), (260, 154157)]