209954367

素因数分解:

$3^2\times 7^2\times {\mathrm{476087}}^1$

素因数の和:476107

約数の個数: 18

約数和(自身を含む): 352781208

約数和(自身を除く): 142826841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 476087, 1428261, 3332609, 4284783, 9997827, 23328263, 29993481, 69984789, 209954367]

約数ペア:

[(1, 209954367), (3, 69984789), (7, 29993481), (9, 23328263), (21, 9997827), (49, 4284783), (63, 3332609), (147, 1428261), (441, 476087)]