131981997

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{2879}}^1$

素因数の和:2985

約数の個数: 32

約数和(自身を含む): 210124800

約数和(自身を除く): 78142803

約数列:

[1, 3, 7, 21, 37, 59, 111, 177, 259, 413, 777, 1239, 2183, 2879, 6549, 8637, 15281, 20153, 45843, 60459, 106523, 169861, 319569, 509583, 745661, 1189027, 2236983, 3567081, 6284857, 18854571, 43993999, 131981997]

約数ペア:

[(1, 131981997), (3, 43993999), (7, 18854571), (21, 6284857), (37, 3567081), (59, 2236983), (111, 1189027), (177, 745661), (259, 509583), (413, 319569), (777, 169861), (1239, 106523), (2183, 60459), (2879, 45843), (6549, 20153), (8637, 15281)]