81857181

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{63901}}^1$

素因数の和:63972

約数の個数: 16

約数和(自身を含む): 126781568

約数和(自身を除く): 44924387

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 63901, 191703, 447307, 1341921, 3897961, 11693883, 27285727, 81857181]

約数ペア:

[(1, 81857181), (3, 27285727), (7, 11693883), (21, 3897961), (61, 1341921), (183, 447307), (427, 191703), (1281, 63901)]