28309720

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{4091}}^1$

素因数の和:4275

約数の個数: 32

約数和(自身を含む): 64080720

約数和(自身を除く): 35771000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 4091, 6920, 8182, 16364, 20455, 32728, 40910, 81820, 163640, 707743, 1415486, 2830972, 3538715, 5661944, 7077430, 14154860, 28309720]

約数ペア:

[(1, 28309720), (2, 14154860), (4, 7077430), (5, 5661944), (8, 3538715), (10, 2830972), (20, 1415486), (40, 707743), (173, 163640), (346, 81820), (692, 40910), (865, 32728), (1384, 20455), (1730, 16364), (3460, 8182), (4091, 6920)]