31780917

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2437}}^1$

素因数の和:2479

約数の個数: 40

約数和(自身を含む): 56639616

約数和(自身を除く): 24858699

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1863, 2437, 4347, 7311, 13041, 17059, 21933, 51177, 56051, 65799, 153531, 168153, 197397, 392357, 460593, 504459, 1177071, 1381779, 1513377, 3531213, 4540131, 10593639, 31780917]

約数ペア:

[(1, 31780917), (3, 10593639), (7, 4540131), (9, 3531213), (21, 1513377), (23, 1381779), (27, 1177071), (63, 504459), (69, 460593), (81, 392357), (161, 197397), (189, 168153), (207, 153531), (483, 65799), (567, 56051), (621, 51177), (1449, 21933), (1863, 17059), (2437, 13041), (4347, 7311)]