611780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{181}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 1398852

約数和(自身を除く): 787072

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 181, 260, 338, 362, 676, 724, 845, 905, 1690, 1810, 2353, 3380, 3620, 4706, 9412, 11765, 23530, 30589, 47060, 61178, 122356, 152945, 305890, 611780]

約数ペア:

[(1, 611780), (2, 305890), (4, 152945), (5, 122356), (10, 61178), (13, 47060), (20, 30589), (26, 23530), (52, 11765), (65, 9412), (130, 4706), (169, 3620), (181, 3380), (260, 2353), (338, 1810), (362, 1690), (676, 905), (724, 845)]