254410821

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{18959}}^1$

素因数の和:19046

約数の個数: 32

約数和(自身を含む): 436838400

約数和(自身を除く): 182427579

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 4473, 13419, 18959, 56877, 132713, 170631, 398139, 511893, 1194417, 1346089, 3583251, 4038267, 9422623, 12114801, 28267869, 36344403, 84803607, 254410821]

約数ペア:

[(1, 254410821), (3, 84803607), (7, 36344403), (9, 28267869), (21, 12114801), (27, 9422623), (63, 4038267), (71, 3583251), (189, 1346089), (213, 1194417), (497, 511893), (639, 398139), (1491, 170631), (1917, 132713), (4473, 56877), (13419, 18959)]