891280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:883

約数の個数: 40

約数和(自身を含む): 2234232

約数和(自身を除く): 1342952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 857, 1040, 1714, 3428, 4285, 6856, 8570, 11141, 13712, 17140, 22282, 34280, 44564, 55705, 68560, 89128, 111410, 178256, 222820, 445640, 891280]

約数ペア:

[(1, 891280), (2, 445640), (4, 222820), (5, 178256), (8, 111410), (10, 89128), (13, 68560), (16, 55705), (20, 44564), (26, 34280), (40, 22282), (52, 17140), (65, 13712), (80, 11141), (104, 8570), (130, 6856), (208, 4285), (260, 3428), (520, 1714), (857, 1040)]