217236579

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{1499}}^1$

素因数の和:1679

約数の個数: 32

約数和(自身を含む): 339456000

約数和(自身を除く): 122219421

約数列:

[1, 3, 7, 21, 67, 103, 201, 309, 469, 721, 1407, 1499, 2163, 4497, 6901, 10493, 20703, 31479, 48307, 100433, 144921, 154397, 301299, 463191, 703031, 1080779, 2109093, 3242337, 10344599, 31033797, 72412193, 217236579]

約数ペア:

[(1, 217236579), (3, 72412193), (7, 31033797), (21, 10344599), (67, 3242337), (103, 2109093), (201, 1080779), (309, 703031), (469, 463191), (721, 301299), (1407, 154397), (1499, 144921), (2163, 100433), (4497, 48307), (6901, 31479), (10493, 20703)]