445640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 1081080

約数和(自身を除く): 635440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 857, 1714, 3428, 4285, 6856, 8570, 11141, 17140, 22282, 34280, 44564, 55705, 89128, 111410, 222820, 445640]

約数ペア:

[(1, 445640), (2, 222820), (4, 111410), (5, 89128), (8, 55705), (10, 44564), (13, 34280), (20, 22282), (26, 17140), (40, 11141), (52, 8570), (65, 6856), (104, 4285), (130, 3428), (260, 1714), (520, 857)]