21568976

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:900

約数の個数: 60

約数和(自身を含む): 49525476

約数和(自身を除く): 27956500

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 484, 572, 857, 968, 1144, 1573, 1714, 1936, 2288, 3146, 3428, 6292, 6856, 9427, 11141, 12584, 13712, 18854, 22282, 25168, 37708, 44564, 75416, 89128, 103697, 122551, 150832, 178256, 207394, 245102, 414788, 490204, 829576, 980408, 1348061, 1659152, 1960816, 2696122, 5392244, 10784488, 21568976]

約数ペア:

[(1, 21568976), (2, 10784488), (4, 5392244), (8, 2696122), (11, 1960816), (13, 1659152), (16, 1348061), (22, 980408), (26, 829576), (44, 490204), (52, 414788), (88, 245102), (104, 207394), (121, 178256), (143, 150832), (176, 122551), (208, 103697), (242, 89128), (286, 75416), (484, 44564), (572, 37708), (857, 25168), (968, 22282), (1144, 18854), (1573, 13712), (1714, 12584), (1936, 11141), (2288, 9427), (3146, 6856), (3428, 6292)]