20404328

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 46694400

約数和(自身を除く): 26290072

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 127, 133, 151, 152, 254, 266, 302, 508, 532, 604, 889, 1016, 1057, 1064, 1208, 1778, 2114, 2413, 2869, 3556, 4228, 4826, 5738, 7112, 8456, 9652, 11476, 16891, 19177, 19304, 20083, 22952, 33782, 38354, 40166, 67564, 76708, 80332, 134239, 135128, 153416, 160664, 268478, 364363, 536956, 728726, 1073912, 1457452, 2550541, 2914904, 5101082, 10202164, 20404328]

約数ペア:

[(1, 20404328), (2, 10202164), (4, 5101082), (7, 2914904), (8, 2550541), (14, 1457452), (19, 1073912), (28, 728726), (38, 536956), (56, 364363), (76, 268478), (127, 160664), (133, 153416), (151, 135128), (152, 134239), (254, 80332), (266, 76708), (302, 67564), (508, 40166), (532, 38354), (604, 33782), (889, 22952), (1016, 20083), (1057, 19304), (1064, 19177), (1208, 16891), (1778, 11476), (2114, 9652), (2413, 8456), (2869, 7112), (3556, 5738), (4228, 4826)]