131271

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:83

約数の個数: 24

約数和(自身を含む): 218880

約数和(自身を除く): 87609

約数列:

[1, 3, 7, 19, 21, 47, 49, 57, 133, 141, 147, 329, 399, 893, 931, 987, 2303, 2679, 2793, 6251, 6909, 18753, 43757, 131271]

約数ペア:

[(1, 131271), (3, 43757), (7, 18753), (19, 6909), (21, 6251), (47, 2793), (49, 2679), (57, 2303), (133, 987), (141, 931), (147, 893), (329, 399)]