646947

素因数分解:

$3^4\times 7^2\times {\mathrm{163}}^1$

素因数の和:189

約数の個数: 30

約数和(自身を含む): 1131108

約数和(自身を除く): 484161

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 163, 189, 441, 489, 567, 1141, 1323, 1467, 3423, 3969, 4401, 7987, 10269, 13203, 23961, 30807, 71883, 92421, 215649, 646947]

約数ペア:

[(1, 646947), (3, 215649), (7, 92421), (9, 71883), (21, 30807), (27, 23961), (49, 13203), (63, 10269), (81, 7987), (147, 4401), (163, 3969), (189, 3423), (441, 1467), (489, 1323), (567, 1141)]