409705960

素因数分解:

$2^3\times 5^1\times {\mathrm{10242649}}^1$

素因数の和:10242660

約数の個数: 16

約数和(自身を含む): 921838500

約数和(自身を除く): 512132540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10242649, 20485298, 40970596, 51213245, 81941192, 102426490, 204852980, 409705960]

約数ペア:

[(1, 409705960), (2, 204852980), (4, 102426490), (5, 81941192), (8, 51213245), (10, 40970596), (20, 20485298), (40, 10242649)]