18994768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 42497280

約数和(自身を除く): 23502512

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 47, 52, 58, 67, 94, 104, 116, 134, 188, 208, 232, 268, 376, 377, 464, 536, 611, 752, 754, 871, 1072, 1222, 1363, 1508, 1742, 1943, 2444, 2726, 3016, 3149, 3484, 3886, 4888, 5452, 6032, 6298, 6968, 7772, 9776, 10904, 12596, 13936, 15544, 17719, 21808, 25192, 25259, 31088, 35438, 40937, 50384, 50518, 70876, 81874, 91321, 101036, 141752, 163748, 182642, 202072, 283504, 327496, 365284, 404144, 654992, 730568, 1187173, 1461136, 2374346, 4748692, 9497384, 18994768]

約数ペア:

[(1, 18994768), (2, 9497384), (4, 4748692), (8, 2374346), (13, 1461136), (16, 1187173), (26, 730568), (29, 654992), (47, 404144), (52, 365284), (58, 327496), (67, 283504), (94, 202072), (104, 182642), (116, 163748), (134, 141752), (188, 101036), (208, 91321), (232, 81874), (268, 70876), (376, 50518), (377, 50384), (464, 40937), (536, 35438), (611, 31088), (752, 25259), (754, 25192), (871, 21808), (1072, 17719), (1222, 15544), (1363, 13936), (1508, 12596), (1742, 10904), (1943, 9776), (2444, 7772), (2726, 6968), (3016, 6298), (3149, 6032), (3484, 5452), (3886, 4888)]