40212980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28319}}^1$

素因数の和:28399

約数の個数: 24

約数和(自身を含む): 85639680

約数和(自身を除く): 45426700

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28319, 56638, 113276, 141595, 283190, 566380, 2010649, 4021298, 8042596, 10053245, 20106490, 40212980]

約数ペア:

[(1, 40212980), (2, 20106490), (4, 10053245), (5, 8042596), (10, 4021298), (20, 2010649), (71, 566380), (142, 283190), (284, 141595), (355, 113276), (710, 56638), (1420, 28319)]