18680816

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 46068480

約数和(自身を除く): 27387664

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 59, 77, 88, 112, 118, 154, 176, 236, 257, 308, 413, 472, 514, 616, 649, 826, 944, 1028, 1232, 1298, 1652, 1799, 2056, 2596, 2827, 3304, 3598, 4112, 4543, 5192, 5654, 6608, 7196, 9086, 10384, 11308, 14392, 15163, 18172, 19789, 22616, 28784, 30326, 36344, 39578, 45232, 60652, 72688, 79156, 106141, 121304, 158312, 166793, 212282, 242608, 316624, 333586, 424564, 667172, 849128, 1167551, 1334344, 1698256, 2335102, 2668688, 4670204, 9340408, 18680816]

約数ペア:

[(1, 18680816), (2, 9340408), (4, 4670204), (7, 2668688), (8, 2335102), (11, 1698256), (14, 1334344), (16, 1167551), (22, 849128), (28, 667172), (44, 424564), (56, 333586), (59, 316624), (77, 242608), (88, 212282), (112, 166793), (118, 158312), (154, 121304), (176, 106141), (236, 79156), (257, 72688), (308, 60652), (413, 45232), (472, 39578), (514, 36344), (616, 30326), (649, 28784), (826, 22616), (944, 19789), (1028, 18172), (1232, 15163), (1298, 14392), (1652, 11308), (1799, 10384), (2056, 9086), (2596, 7196), (2827, 6608), (3304, 5654), (3598, 5192), (4112, 4543)]