1561505

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 24

約数和(自身を含む): 2154600

約数和(自身を除く): 593095

約数列:

[1, 5, 11, 29, 55, 89, 121, 145, 319, 445, 605, 979, 1595, 2581, 3509, 4895, 10769, 12905, 17545, 28391, 53845, 141955, 312301, 1561505]

約数ペア:

[(1, 1561505), (5, 312301), (11, 141955), (29, 53845), (55, 28391), (89, 17545), (121, 12905), (145, 10769), (319, 4895), (445, 3509), (605, 2581), (979, 1595)]