20958966

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{89}}^2$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 54795240

約数和(自身を除く): 33836274

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 89, 98, 126, 147, 178, 189, 267, 294, 378, 441, 534, 623, 801, 882, 1246, 1323, 1602, 1869, 2403, 2646, 3738, 4361, 4806, 5607, 7921, 8722, 11214, 13083, 15842, 16821, 23763, 26166, 33642, 39249, 47526, 55447, 71289, 78498, 110894, 117747, 142578, 166341, 213867, 235494, 332682, 388129, 427734, 499023, 776258, 998046, 1164387, 1497069, 2328774, 2994138, 3493161, 6986322, 10479483, 20958966]

約数ペア:

[(1, 20958966), (2, 10479483), (3, 6986322), (6, 3493161), (7, 2994138), (9, 2328774), (14, 1497069), (18, 1164387), (21, 998046), (27, 776258), (42, 499023), (49, 427734), (54, 388129), (63, 332682), (89, 235494), (98, 213867), (126, 166341), (147, 142578), (178, 117747), (189, 110894), (267, 78498), (294, 71289), (378, 55447), (441, 47526), (534, 39249), (623, 33642), (801, 26166), (882, 23763), (1246, 16821), (1323, 15842), (1602, 13083), (1869, 11214), (2403, 8722), (2646, 7921), (3738, 5607), (4361, 4806)]