18878288

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 44330496

約数和(自身を除く): 25452208

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 37, 44, 52, 74, 88, 104, 143, 148, 176, 208, 223, 286, 296, 407, 446, 481, 572, 592, 814, 892, 962, 1144, 1628, 1784, 1924, 2288, 2453, 2899, 3256, 3568, 3848, 4906, 5291, 5798, 6512, 7696, 8251, 9812, 10582, 11596, 16502, 19624, 21164, 23192, 31889, 33004, 39248, 42328, 46384, 63778, 66008, 84656, 90761, 107263, 127556, 132016, 181522, 214526, 255112, 363044, 429052, 510224, 726088, 858104, 1179893, 1452176, 1716208, 2359786, 4719572, 9439144, 18878288]

約数ペア:

[(1, 18878288), (2, 9439144), (4, 4719572), (8, 2359786), (11, 1716208), (13, 1452176), (16, 1179893), (22, 858104), (26, 726088), (37, 510224), (44, 429052), (52, 363044), (74, 255112), (88, 214526), (104, 181522), (143, 132016), (148, 127556), (176, 107263), (208, 90761), (223, 84656), (286, 66008), (296, 63778), (407, 46384), (446, 42328), (481, 39248), (572, 33004), (592, 31889), (814, 23192), (892, 21164), (962, 19624), (1144, 16502), (1628, 11596), (1784, 10582), (1924, 9812), (2288, 8251), (2453, 7696), (2899, 6512), (3256, 5798), (3568, 5291), (3848, 4906)]