21423717

素因数分解:

$3^3\times 7^1\times {\mathrm{263}}^1\times {\mathrm{431}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15071643

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 263, 431, 789, 1293, 1841, 2367, 3017, 3879, 5523, 7101, 9051, 11637, 16569, 27153, 49707, 81459, 113353, 340059, 793471, 1020177, 2380413, 3060531, 7141239, 21423717]

約数ペア:

[(1, 21423717), (3, 7141239), (7, 3060531), (9, 2380413), (21, 1020177), (27, 793471), (63, 340059), (189, 113353), (263, 81459), (431, 49707), (789, 27153), (1293, 16569), (1841, 11637), (2367, 9051), (3017, 7101), (3879, 5523)]