207971397

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{2477}}^1$

素因数の和:2993

約数の個数: 24

約数和(自身を含む): 316985760

約数和(自身を除く): 109014363

約数列:

[1, 3, 9, 19, 57, 171, 491, 1473, 2477, 4419, 7431, 9329, 22293, 27987, 47063, 83961, 141189, 423567, 1216207, 3648621, 10945863, 23107933, 69323799, 207971397]

約数ペア:

[(1, 207971397), (3, 69323799), (9, 23107933), (19, 10945863), (57, 3648621), (171, 1216207), (491, 423567), (1473, 141189), (2477, 83961), (4419, 47063), (7431, 27987), (9329, 22293)]