218905731

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{1487}}^2$

素因数の和:2991

約数の個数: 18

約数和(自身を含む): 345174492

約数和(自身を除く): 126268761

約数列:

[1, 3, 9, 11, 33, 99, 1487, 4461, 13383, 16357, 49071, 147213, 2211169, 6633507, 19900521, 24322859, 72968577, 218905731]

約数ペア:

[(1, 218905731), (3, 72968577), (9, 24322859), (11, 19900521), (33, 6633507), (99, 2211169), (1487, 147213), (4461, 49071), (13383, 16357)]