20163249

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 40

約数和(自身を含む): 32060160

約数和(自身を除く): 11896911

約数列:

[1, 3, 9, 23, 27, 69, 79, 81, 137, 207, 237, 411, 621, 711, 1233, 1817, 1863, 2133, 3151, 3699, 5451, 6399, 9453, 10823, 11097, 16353, 28359, 32469, 49059, 85077, 97407, 147177, 248929, 255231, 292221, 746787, 876663, 2240361, 6721083, 20163249]

約数ペア:

[(1, 20163249), (3, 6721083), (9, 2240361), (23, 876663), (27, 746787), (69, 292221), (79, 255231), (81, 248929), (137, 147177), (207, 97407), (237, 85077), (411, 49059), (621, 32469), (711, 28359), (1233, 16353), (1817, 11097), (1863, 10823), (2133, 9453), (3151, 6399), (3699, 5451)]