20012944

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{457}}^1$

素因数の和:512

約数の個数: 80

約数和(自身を含む): 49068288

約数和(自身を除く): 29055344

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 23, 28, 34, 46, 56, 68, 92, 112, 119, 136, 161, 184, 238, 272, 322, 368, 391, 457, 476, 644, 782, 914, 952, 1288, 1564, 1828, 1904, 2576, 2737, 3128, 3199, 3656, 5474, 6256, 6398, 7312, 7769, 10511, 10948, 12796, 15538, 21022, 21896, 25592, 31076, 42044, 43792, 51184, 54383, 62152, 73577, 84088, 108766, 124304, 147154, 168176, 178687, 217532, 294308, 357374, 435064, 588616, 714748, 870128, 1177232, 1250809, 1429496, 2501618, 2858992, 5003236, 10006472, 20012944]

約数ペア:

[(1, 20012944), (2, 10006472), (4, 5003236), (7, 2858992), (8, 2501618), (14, 1429496), (16, 1250809), (17, 1177232), (23, 870128), (28, 714748), (34, 588616), (46, 435064), (56, 357374), (68, 294308), (92, 217532), (112, 178687), (119, 168176), (136, 147154), (161, 124304), (184, 108766), (238, 84088), (272, 73577), (322, 62152), (368, 54383), (391, 51184), (457, 43792), (476, 42044), (644, 31076), (782, 25592), (914, 21896), (952, 21022), (1288, 15538), (1564, 12796), (1828, 10948), (1904, 10511), (2576, 7769), (2737, 7312), (3128, 6398), (3199, 6256), (3656, 5474)]