31309225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 40711680

約数和(自身を除く): 9402455

約数列:

[1, 5, 25, 31, 71, 155, 355, 569, 775, 1775, 2201, 2845, 11005, 14225, 17639, 40399, 55025, 88195, 201995, 440975, 1009975, 1252369, 6261845, 31309225]

約数ペア:

[(1, 31309225), (5, 6261845), (25, 1252369), (31, 1009975), (71, 440975), (155, 201995), (355, 88195), (569, 55025), (775, 40399), (1775, 17639), (2201, 14225), (2845, 11005)]