31457727

素因数分解:

$3^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 54304800

約数和(自身を除く): 22847073

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 327, 509, 567, 763, 981, 1527, 2289, 2943, 3563, 4581, 6867, 8829, 10689, 13743, 20601, 32067, 41229, 55481, 61803, 96201, 166443, 288603, 388367, 499329, 1165101, 1497987, 3495303, 4493961, 10485909, 31457727]

約数ペア:

[(1, 31457727), (3, 10485909), (7, 4493961), (9, 3495303), (21, 1497987), (27, 1165101), (63, 499329), (81, 388367), (109, 288603), (189, 166443), (327, 96201), (509, 61803), (567, 55481), (763, 41229), (981, 32067), (1527, 20601), (2289, 13743), (2943, 10689), (3563, 8829), (4581, 6867)]