19716453

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5179}}^1$

素因数の和:5238

約数の個数: 20

約数和(自身を含む): 30085440

約数和(自身を除く): 10368987

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5179, 15537, 46611, 139833, 243413, 419499, 730239, 2190717, 6572151, 19716453]

約数ペア:

[(1, 19716453), (3, 6572151), (9, 2190717), (27, 730239), (47, 419499), (81, 243413), (141, 139833), (423, 46611), (1269, 15537), (3807, 5179)]