21938390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70769}}^1$

素因数の和:70807

約数の個数: 16

約数和(自身を含む): 40763520

約数和(自身を除く): 18825130

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70769, 141538, 353845, 707690, 2193839, 4387678, 10969195, 21938390]

約数ペア:

[(1, 21938390), (2, 10969195), (5, 4387678), (10, 2193839), (31, 707690), (62, 353845), (155, 141538), (310, 70769)]