489609025

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{1117}}^1$

素因数の和:1413

約数の個数: 24

約数和(自身を含む): 617605560

約数和(自身を除く): 127996535

約数列:

[1, 5, 25, 89, 197, 445, 985, 1117, 2225, 4925, 5585, 17533, 27925, 87665, 99413, 220049, 438325, 497065, 1100245, 2485325, 5501225, 19584361, 97921805, 489609025]

約数ペア:

[(1, 489609025), (5, 97921805), (25, 19584361), (89, 5501225), (197, 2485325), (445, 1100245), (985, 497065), (1117, 438325), (2225, 220049), (4925, 99413), (5585, 87665), (17533, 27925)]