215649

素因数分解:

$3^3\times 7^2\times {\mathrm{163}}^1$

素因数の和:186

約数の個数: 24

約数和(自身を含む): 373920

約数和(自身を除く): 158271

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 163, 189, 441, 489, 1141, 1323, 1467, 3423, 4401, 7987, 10269, 23961, 30807, 71883, 215649]

約数ペア:

[(1, 215649), (3, 71883), (7, 30807), (9, 23961), (21, 10269), (27, 7987), (49, 4401), (63, 3423), (147, 1467), (163, 1323), (189, 1141), (441, 489)]