21550256

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:107

約数の個数: 120

約数和(自身を含む): 55558944

約数和(自身を除く): 34008688

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 41, 52, 56, 76, 82, 91, 104, 112, 133, 152, 164, 182, 208, 247, 266, 287, 304, 328, 361, 364, 494, 532, 533, 574, 656, 722, 728, 779, 988, 1064, 1066, 1148, 1444, 1456, 1558, 1729, 1976, 2128, 2132, 2296, 2527, 2888, 3116, 3458, 3731, 3952, 4264, 4592, 4693, 5054, 5453, 5776, 6232, 6916, 7462, 8528, 9386, 10108, 10127, 10906, 12464, 13832, 14801, 14924, 18772, 20216, 20254, 21812, 27664, 29602, 29848, 32851, 37544, 40432, 40508, 43624, 59204, 59696, 65702, 70889, 75088, 81016, 87248, 103607, 118408, 131404, 141778, 162032, 192413, 207214, 236816, 262808, 283556, 384826, 414428, 525616, 567112, 769652, 828856, 1134224, 1346891, 1539304, 1657712, 2693782, 3078608, 5387564, 10775128, 21550256]

約数ペア:

[(1, 21550256), (2, 10775128), (4, 5387564), (7, 3078608), (8, 2693782), (13, 1657712), (14, 1539304), (16, 1346891), (19, 1134224), (26, 828856), (28, 769652), (38, 567112), (41, 525616), (52, 414428), (56, 384826), (76, 283556), (82, 262808), (91, 236816), (104, 207214), (112, 192413), (133, 162032), (152, 141778), (164, 131404), (182, 118408), (208, 103607), (247, 87248), (266, 81016), (287, 75088), (304, 70889), (328, 65702), (361, 59696), (364, 59204), (494, 43624), (532, 40508), (533, 40432), (574, 37544), (656, 32851), (722, 29848), (728, 29602), (779, 27664), (988, 21812), (1064, 20254), (1066, 20216), (1148, 18772), (1444, 14924), (1456, 14801), (1558, 13832), (1729, 12464), (1976, 10906), (2128, 10127), (2132, 10108), (2296, 9386), (2527, 8528), (2888, 7462), (3116, 6916), (3458, 6232), (3731, 5776), (3952, 5453), (4264, 5054), (4592, 4693)]