31557915

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 57328128

約数和(自身を除く): 25770213

約数列:

[1, 3, 5, 9, 15, 43, 45, 47, 129, 141, 215, 235, 347, 387, 423, 645, 705, 1041, 1735, 1935, 2021, 2115, 3123, 5205, 6063, 10105, 14921, 15615, 16309, 18189, 30315, 44763, 48927, 74605, 81545, 90945, 134289, 146781, 223815, 244635, 671445, 701287, 733905, 2103861, 3506435, 6311583, 10519305, 31557915]

約数ペア:

[(1, 31557915), (3, 10519305), (5, 6311583), (9, 3506435), (15, 2103861), (43, 733905), (45, 701287), (47, 671445), (129, 244635), (141, 223815), (215, 146781), (235, 134289), (347, 90945), (387, 81545), (423, 74605), (645, 48927), (705, 44763), (1041, 30315), (1735, 18189), (1935, 16309), (2021, 15615), (2115, 14921), (3123, 10105), (5205, 6063)]