21051250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1531}}^1$

素因数の和:1564

約数の個数: 40

約数和(自身を含む): 43073712

約数和(自身を除く): 22022462

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1531, 2750, 3062, 6875, 7655, 13750, 15310, 16841, 33682, 38275, 76550, 84205, 168410, 191375, 382750, 421025, 842050, 956875, 1913750, 2105125, 4210250, 10525625, 21051250]

約数ペア:

[(1, 21051250), (2, 10525625), (5, 4210250), (10, 2105125), (11, 1913750), (22, 956875), (25, 842050), (50, 421025), (55, 382750), (110, 191375), (125, 168410), (250, 84205), (275, 76550), (550, 38275), (625, 33682), (1250, 16841), (1375, 15310), (1531, 13750), (2750, 7655), (3062, 6875)]