30405980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{138209}}^1$

素因数の和:138229

約数の個数: 24

約数和(自身を含む): 69657840

約数和(自身を除く): 39251860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 138209, 276418, 552836, 691045, 1382090, 1520299, 2764180, 3040598, 6081196, 7601495, 15202990, 30405980]

約数ペア:

[(1, 30405980), (2, 15202990), (4, 7601495), (5, 6081196), (10, 3040598), (11, 2764180), (20, 1520299), (22, 1382090), (44, 691045), (55, 552836), (110, 276418), (220, 138209)]