218864331

素因数分解:

$3^2\times 7^2\times {\mathrm{496291}}^1$

素因数の和:496311

約数の個数: 18

約数和(自身を含む): 367752372

約数和(自身を除く): 148888041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 496291, 1488873, 3474037, 4466619, 10422111, 24318259, 31266333, 72954777, 218864331]

約数ペア:

[(1, 218864331), (3, 72954777), (7, 31266333), (9, 24318259), (21, 10422111), (49, 4466619), (63, 3474037), (147, 1488873), (441, 496291)]