31320681

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1487}}^1$

素因数の和:1573

約数の個数: 32

約数和(自身を含む): 51425280

約数和(自身を除く): 20104599

約数列:

[1, 3, 7, 17, 21, 51, 59, 119, 177, 357, 413, 1003, 1239, 1487, 3009, 4461, 7021, 10409, 21063, 25279, 31227, 75837, 87733, 176953, 263199, 530859, 614131, 1491461, 1842393, 4474383, 10440227, 31320681]

約数ペア:

[(1, 31320681), (3, 10440227), (7, 4474383), (17, 1842393), (21, 1491461), (51, 614131), (59, 530859), (119, 263199), (177, 176953), (357, 87733), (413, 75837), (1003, 31227), (1239, 25279), (1487, 21063), (3009, 10409), (4461, 7021)]