210494020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{86981}}^1$

素因数の和:87012

約数の個数: 36

約数和(自身を含む): 485881452

約数和(自身を除く): 275387432

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 86981, 173962, 347924, 434905, 869810, 956791, 1739620, 1913582, 3827164, 4783955, 9567910, 10524701, 19135820, 21049402, 42098804, 52623505, 105247010, 210494020]

約数ペア:

[(1, 210494020), (2, 105247010), (4, 52623505), (5, 42098804), (10, 21049402), (11, 19135820), (20, 10524701), (22, 9567910), (44, 4783955), (55, 3827164), (110, 1913582), (121, 1739620), (220, 956791), (242, 869810), (484, 434905), (605, 347924), (1210, 173962), (2420, 86981)]