81864692

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 108

約数和(自身を含む): 191543940

約数和(自身を除く): 109679248

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 49, 52, 76, 89, 91, 98, 133, 178, 182, 196, 247, 266, 356, 361, 364, 494, 532, 623, 637, 722, 931, 988, 1157, 1246, 1274, 1444, 1691, 1729, 1862, 2314, 2492, 2527, 2548, 3382, 3458, 3724, 4361, 4628, 4693, 5054, 6764, 6916, 8099, 8722, 9386, 10108, 11837, 12103, 16198, 17444, 17689, 18772, 21983, 23674, 24206, 32129, 32396, 32851, 35378, 43966, 47348, 48412, 56693, 64258, 65702, 70756, 82859, 87932, 113386, 128516, 131404, 153881, 165718, 224903, 226772, 229957, 307762, 331436, 417677, 449806, 459914, 615524, 835354, 899612, 919828, 1077167, 1574321, 1670708, 2154334, 2923739, 3148642, 4308668, 5847478, 6297284, 11694956, 20466173, 40932346, 81864692]

約数ペア:

[(1, 81864692), (2, 40932346), (4, 20466173), (7, 11694956), (13, 6297284), (14, 5847478), (19, 4308668), (26, 3148642), (28, 2923739), (38, 2154334), (49, 1670708), (52, 1574321), (76, 1077167), (89, 919828), (91, 899612), (98, 835354), (133, 615524), (178, 459914), (182, 449806), (196, 417677), (247, 331436), (266, 307762), (356, 229957), (361, 226772), (364, 224903), (494, 165718), (532, 153881), (623, 131404), (637, 128516), (722, 113386), (931, 87932), (988, 82859), (1157, 70756), (1246, 65702), (1274, 64258), (1444, 56693), (1691, 48412), (1729, 47348), (1862, 43966), (2314, 35378), (2492, 32851), (2527, 32396), (2548, 32129), (3382, 24206), (3458, 23674), (3724, 21983), (4361, 18772), (4628, 17689), (4693, 17444), (5054, 16198), (6764, 12103), (6916, 11837), (8099, 10108), (8722, 9386)]