17995689

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 40

約数和(自身を含む): 28575360

約数和(自身を除く): 10579671

約数列:

[1, 3, 9, 27, 29, 47, 81, 87, 141, 163, 261, 423, 489, 783, 1269, 1363, 1467, 2349, 3807, 4089, 4401, 4727, 7661, 12267, 13203, 14181, 22983, 36801, 42543, 68949, 110403, 127629, 206847, 222169, 382887, 620541, 666507, 1999521, 5998563, 17995689]

約数ペア:

[(1, 17995689), (3, 5998563), (9, 1999521), (27, 666507), (29, 620541), (47, 382887), (81, 222169), (87, 206847), (141, 127629), (163, 110403), (261, 68949), (423, 42543), (489, 36801), (783, 22983), (1269, 14181), (1363, 13203), (1467, 12267), (2349, 7661), (3807, 4727), (4089, 4401)]