18897879

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:101

約数の個数: 96

約数和(自身を含む): 36771840

約数和(自身を除く): 17873961

約数列:

[1, 3, 7, 11, 13, 21, 29, 31, 33, 39, 49, 77, 87, 91, 93, 143, 147, 203, 217, 231, 273, 319, 341, 377, 403, 429, 539, 609, 637, 651, 899, 957, 1001, 1023, 1131, 1209, 1421, 1519, 1617, 1911, 2233, 2387, 2639, 2697, 2821, 3003, 4147, 4263, 4433, 4557, 6293, 6699, 7007, 7161, 7917, 8463, 9889, 11687, 12441, 13299, 15631, 16709, 18473, 18879, 19747, 21021, 29029, 29667, 31031, 35061, 44051, 46893, 50127, 55419, 59241, 69223, 81809, 87087, 93093, 128557, 132153, 203203, 207669, 217217, 245427, 385671, 484561, 572663, 609609, 651651, 899899, 1453683, 1717989, 2699697, 6299293, 18897879]

約数ペア:

[(1, 18897879), (3, 6299293), (7, 2699697), (11, 1717989), (13, 1453683), (21, 899899), (29, 651651), (31, 609609), (33, 572663), (39, 484561), (49, 385671), (77, 245427), (87, 217217), (91, 207669), (93, 203203), (143, 132153), (147, 128557), (203, 93093), (217, 87087), (231, 81809), (273, 69223), (319, 59241), (341, 55419), (377, 50127), (403, 46893), (429, 44051), (539, 35061), (609, 31031), (637, 29667), (651, 29029), (899, 21021), (957, 19747), (1001, 18879), (1023, 18473), (1131, 16709), (1209, 15631), (1421, 13299), (1519, 12441), (1617, 11687), (1911, 9889), (2233, 8463), (2387, 7917), (2639, 7161), (2697, 7007), (2821, 6699), (3003, 6293), (4147, 4557), (4263, 4433)]