21478347

素因数分解:

$3^2\times {\mathrm{11}}^4\times {\mathrm{163}}^1$

素因数の和:213

約数の個数: 30

約数和(自身を含む): 34335860

約数和(自身を除く): 12857513

約数列:

[1, 3, 9, 11, 33, 99, 121, 163, 363, 489, 1089, 1331, 1467, 1793, 3993, 5379, 11979, 14641, 16137, 19723, 43923, 59169, 131769, 177507, 216953, 650859, 1952577, 2386483, 7159449, 21478347]

約数ペア:

[(1, 21478347), (3, 7159449), (9, 2386483), (11, 1952577), (33, 650859), (99, 216953), (121, 177507), (163, 131769), (363, 59169), (489, 43923), (1089, 19723), (1331, 16137), (1467, 14641), (1793, 11979), (3993, 5379)]