21697220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37409}}^1$

素因数の和:37447

約数の個数: 24

約数和(自身を含む): 47136600

約数和(自身を除く): 25439380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37409, 74818, 149636, 187045, 374090, 748180, 1084861, 2169722, 4339444, 5424305, 10848610, 21697220]

約数ペア:

[(1, 21697220), (2, 10848610), (4, 5424305), (5, 4339444), (10, 2169722), (20, 1084861), (29, 748180), (58, 374090), (116, 187045), (145, 149636), (290, 74818), (580, 37409)]