18220725

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1723}}^1$

素因数の和:1786

約数の個数: 36

約数和(自身を含む): 33349056

約数和(自身を除く): 15128331

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 1723, 2115, 3525, 5169, 8615, 10575, 15507, 25845, 43075, 77535, 80981, 129225, 242943, 387675, 404905, 728829, 1214715, 2024525, 3644145, 6073575, 18220725]

約数ペア:

[(1, 18220725), (3, 6073575), (5, 3644145), (9, 2024525), (15, 1214715), (25, 728829), (45, 404905), (47, 387675), (75, 242943), (141, 129225), (225, 80981), (235, 77535), (423, 43075), (705, 25845), (1175, 15507), (1723, 10575), (2115, 8615), (3525, 5169)]