21718100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{7489}}^1$

素因数の和:7532

約数の個数: 36

約数和(自身を含む): 48759900

約数和(自身を除く): 27041800

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 7489, 14978, 29956, 37445, 74890, 149780, 187225, 217181, 374450, 434362, 748900, 868724, 1085905, 2171810, 4343620, 5429525, 10859050, 21718100]

約数ペア:

[(1, 21718100), (2, 10859050), (4, 5429525), (5, 4343620), (10, 2171810), (20, 1085905), (25, 868724), (29, 748900), (50, 434362), (58, 374450), (100, 217181), (116, 187225), (145, 149780), (290, 74890), (580, 37445), (725, 29956), (1450, 14978), (2900, 7489)]