1218287

素因数分解:

$7^2\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:107

約数の個数: 18

約数和(自身を含む): 1513008

約数和(自身を除く): 294721

約数列:

[1, 7, 23, 47, 49, 161, 329, 529, 1081, 1127, 2303, 3703, 7567, 24863, 25921, 52969, 174041, 1218287]

約数ペア:

[(1, 1218287), (7, 174041), (23, 52969), (47, 25921), (49, 24863), (161, 7567), (329, 3703), (529, 2303), (1081, 1127)]