31640440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{857}}^1$

素因数の和:952

約数の個数: 64

約数和(自身を含む): 77837760

約数和(自身を除く): 46197320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 520, 568, 710, 857, 923, 1420, 1714, 1846, 2840, 3428, 3692, 4285, 4615, 6856, 7384, 8570, 9230, 11141, 17140, 18460, 22282, 34280, 36920, 44564, 55705, 60847, 89128, 111410, 121694, 222820, 243388, 304235, 445640, 486776, 608470, 791011, 1216940, 1582022, 2433880, 3164044, 3955055, 6328088, 7910110, 15820220, 31640440]

約数ペア:

[(1, 31640440), (2, 15820220), (4, 7910110), (5, 6328088), (8, 3955055), (10, 3164044), (13, 2433880), (20, 1582022), (26, 1216940), (40, 791011), (52, 608470), (65, 486776), (71, 445640), (104, 304235), (130, 243388), (142, 222820), (260, 121694), (284, 111410), (355, 89128), (520, 60847), (568, 55705), (710, 44564), (857, 36920), (923, 34280), (1420, 22282), (1714, 18460), (1846, 17140), (2840, 11141), (3428, 9230), (3692, 8570), (4285, 7384), (4615, 6856)]