28509220

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1699}}^1$

素因数の和:2547

約数の個数: 24

約数和(自身を含む): 59976000

約数和(自身を除く): 31466780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 1699, 3356, 3398, 4195, 6796, 8390, 8495, 16780, 16990, 33980, 1425461, 2850922, 5701844, 7127305, 14254610, 28509220]

約数ペア:

[(1, 28509220), (2, 14254610), (4, 7127305), (5, 5701844), (10, 2850922), (20, 1425461), (839, 33980), (1678, 16990), (1699, 16780), (3356, 8495), (3398, 8390), (4195, 6796)]