21658328

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1601}}^1$

素因数の和:1715

約数の個数: 32

約数和(自身を含む): 43254000

約数和(自身を除く): 21595672

約数列:

[1, 2, 4, 8, 19, 38, 76, 89, 152, 178, 356, 712, 1601, 1691, 3202, 3382, 6404, 6764, 12808, 13528, 30419, 60838, 121676, 142489, 243352, 284978, 569956, 1139912, 2707291, 5414582, 10829164, 21658328]

約数ペア:

[(1, 21658328), (2, 10829164), (4, 5414582), (8, 2707291), (19, 1139912), (38, 569956), (76, 284978), (89, 243352), (152, 142489), (178, 121676), (356, 60838), (712, 30419), (1601, 13528), (1691, 12808), (3202, 6764), (3382, 6404)]