72039280

素因数分解:

$2^4\times 5^1\times {\mathrm{900491}}^1$

素因数の和:900504

約数の個数: 20

約数和(自身を含む): 167491512

約数和(自身を除く): 95452232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 900491, 1800982, 3601964, 4502455, 7203928, 9004910, 14407856, 18009820, 36019640, 72039280]

約数ペア:

[(1, 72039280), (2, 36019640), (4, 18009820), (5, 14407856), (8, 9004910), (10, 7203928), (16, 4502455), (20, 3601964), (40, 1800982), (80, 900491)]