21120550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3491}}^1$

素因数の和:3525

約数の個数: 36

約数和(自身を含む): 43192548

約数和(自身を除く): 22071998

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3491, 6050, 6982, 17455, 34910, 38401, 76802, 87275, 174550, 192005, 384010, 422411, 844822, 960025, 1920050, 2112055, 4224110, 10560275, 21120550]

約数ペア:

[(1, 21120550), (2, 10560275), (5, 4224110), (10, 2112055), (11, 1920050), (22, 960025), (25, 844822), (50, 422411), (55, 384010), (110, 192005), (121, 174550), (242, 87275), (275, 76802), (550, 38401), (605, 34910), (1210, 17455), (3025, 6982), (3491, 6050)]