21984100

素因数分解:

$2^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1151}}^1$

素因数の和:1356

約数の個数: 36

約数和(自身を含む): 47996928

約数和(自身を除く): 26012828

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 191, 382, 764, 955, 1151, 1910, 2302, 3820, 4604, 4775, 5755, 9550, 11510, 19100, 23020, 28775, 57550, 115100, 219841, 439682, 879364, 1099205, 2198410, 4396820, 5496025, 10992050, 21984100]

約数ペア:

[(1, 21984100), (2, 10992050), (4, 5496025), (5, 4396820), (10, 2198410), (20, 1099205), (25, 879364), (50, 439682), (100, 219841), (191, 115100), (382, 57550), (764, 28775), (955, 23020), (1151, 19100), (1910, 11510), (2302, 9550), (3820, 5755), (4604, 4775)]