220725

素因数分解:

$3^4\times 5^2\times {\mathrm{109}}^1$

素因数の和:131

約数の個数: 30

約数和(自身を含む): 412610

約数和(自身を除く): 191885

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 109, 135, 225, 327, 405, 545, 675, 981, 1635, 2025, 2725, 2943, 4905, 8175, 8829, 14715, 24525, 44145, 73575, 220725]

約数ペア:

[(1, 220725), (3, 73575), (5, 44145), (9, 24525), (15, 14715), (25, 8829), (27, 8175), (45, 4905), (75, 2943), (81, 2725), (109, 2025), (135, 1635), (225, 981), (327, 675), (405, 545)]