198387

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 24

約数和(自身を含む): 339456

約数和(自身を除く): 141069

約数列:

[1, 3, 7, 9, 21, 47, 63, 67, 141, 201, 329, 423, 469, 603, 987, 1407, 2961, 3149, 4221, 9447, 22043, 28341, 66129, 198387]

約数ペア:

[(1, 198387), (3, 66129), (7, 28341), (9, 22043), (21, 9447), (47, 4221), (63, 3149), (67, 2961), (141, 1407), (201, 987), (329, 603), (423, 469)]