421639209

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{7727}}^1$

素因数の和:7826

約数の個数: 32

約数和(自身を含む): 652861440

約数和(自身を除く): 231222231

約数列:

[1, 3, 9, 27, 43, 47, 129, 141, 387, 423, 1161, 1269, 2021, 6063, 7727, 18189, 23181, 54567, 69543, 208629, 332261, 363169, 996783, 1089507, 2990349, 3268521, 8971047, 9805563, 15616267, 46848801, 140546403, 421639209]

約数ペア:

[(1, 421639209), (3, 140546403), (9, 46848801), (27, 15616267), (43, 9805563), (47, 8971047), (129, 3268521), (141, 2990349), (387, 1089507), (423, 996783), (1161, 363169), (1269, 332261), (2021, 208629), (6063, 69543), (7727, 54567), (18189, 23181)]