21729100

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1103}}^1$

素因数の和:1314

約数の個数: 36

約数和(自身を含む): 47434464

約数和(自身を除く): 25705364

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1103, 1970, 2206, 3940, 4412, 4925, 5515, 9850, 11030, 19700, 22060, 27575, 55150, 110300, 217291, 434582, 869164, 1086455, 2172910, 4345820, 5432275, 10864550, 21729100]

約数ペア:

[(1, 21729100), (2, 10864550), (4, 5432275), (5, 4345820), (10, 2172910), (20, 1086455), (25, 869164), (50, 434582), (100, 217291), (197, 110300), (394, 55150), (788, 27575), (985, 22060), (1103, 19700), (1970, 11030), (2206, 9850), (3940, 5515), (4412, 4925)]