21902275

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{479}}^1$

素因数の和:579

約数の個数: 24

約数和(自身を含む): 28569600

約数和(自身を除く): 6667325

約数列:

[1, 5, 25, 31, 59, 155, 295, 479, 775, 1475, 1829, 2395, 9145, 11975, 14849, 28261, 45725, 74245, 141305, 371225, 706525, 876091, 4380455, 21902275]

約数ペア:

[(1, 21902275), (5, 4380455), (25, 876091), (31, 706525), (59, 371225), (155, 141305), (295, 74245), (479, 45725), (775, 28261), (1475, 14849), (1829, 11975), (2395, 9145)]