21350145

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 14131455

約数列:

[1, 3, 5, 15, 43, 79, 129, 215, 237, 395, 419, 645, 1185, 1257, 2095, 3397, 6285, 10191, 16985, 18017, 33101, 50955, 54051, 90085, 99303, 165505, 270255, 496515, 1423343, 4270029, 7116715, 21350145]

約数ペア:

[(1, 21350145), (3, 7116715), (5, 4270029), (15, 1423343), (43, 496515), (79, 270255), (129, 165505), (215, 99303), (237, 90085), (395, 54051), (419, 50955), (645, 33101), (1185, 18017), (1257, 16985), (2095, 10191), (3397, 6285)]