20407184

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:208

約数の個数: 80

約数和(自身を含む): 47973120

約数和(自身を除く): 27565936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 61, 103, 112, 116, 122, 203, 206, 232, 244, 406, 412, 427, 464, 488, 721, 812, 824, 854, 976, 1442, 1624, 1648, 1708, 1769, 2884, 2987, 3248, 3416, 3538, 5768, 5974, 6283, 6832, 7076, 11536, 11948, 12383, 12566, 14152, 20909, 23896, 24766, 25132, 28304, 41818, 43981, 47792, 49532, 50264, 83636, 87962, 99064, 100528, 167272, 175924, 182207, 198128, 334544, 351848, 364414, 703696, 728828, 1275449, 1457656, 2550898, 2915312, 5101796, 10203592, 20407184]

約数ペア:

[(1, 20407184), (2, 10203592), (4, 5101796), (7, 2915312), (8, 2550898), (14, 1457656), (16, 1275449), (28, 728828), (29, 703696), (56, 364414), (58, 351848), (61, 334544), (103, 198128), (112, 182207), (116, 175924), (122, 167272), (203, 100528), (206, 99064), (232, 87962), (244, 83636), (406, 50264), (412, 49532), (427, 47792), (464, 43981), (488, 41818), (721, 28304), (812, 25132), (824, 24766), (854, 23896), (976, 20909), (1442, 14152), (1624, 12566), (1648, 12383), (1708, 11948), (1769, 11536), (2884, 7076), (2987, 6832), (3248, 6283), (3416, 5974), (3538, 5768)]