19438120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1289}}^1$

素因数の和:1342

約数の個数: 64

約数和(自身を含む): 48762000

約数和(自身を除く): 29323880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 52, 58, 65, 104, 116, 130, 145, 232, 260, 290, 377, 520, 580, 754, 1160, 1289, 1508, 1885, 2578, 3016, 3770, 5156, 6445, 7540, 10312, 12890, 15080, 16757, 25780, 33514, 37381, 51560, 67028, 74762, 83785, 134056, 149524, 167570, 186905, 299048, 335140, 373810, 485953, 670280, 747620, 971906, 1495240, 1943812, 2429765, 3887624, 4859530, 9719060, 19438120]

約数ペア:

[(1, 19438120), (2, 9719060), (4, 4859530), (5, 3887624), (8, 2429765), (10, 1943812), (13, 1495240), (20, 971906), (26, 747620), (29, 670280), (40, 485953), (52, 373810), (58, 335140), (65, 299048), (104, 186905), (116, 167570), (130, 149524), (145, 134056), (232, 83785), (260, 74762), (290, 67028), (377, 51560), (520, 37381), (580, 33514), (754, 25780), (1160, 16757), (1289, 15080), (1508, 12890), (1885, 10312), (2578, 7540), (3016, 6445), (3770, 5156)]