20512781484

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{601}}^1\times {\mathrm{1597}}^1$

素因数の和:2355

約数の個数: 96

約数和(自身を含む): 52040135616

約数和(自身を除く): 31527354132

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 137, 156, 274, 411, 548, 601, 822, 1202, 1597, 1644, 1781, 1803, 2404, 3194, 3562, 3606, 4791, 5343, 6388, 7124, 7212, 7813, 9582, 10686, 15626, 19164, 20761, 21372, 23439, 31252, 41522, 46878, 62283, 82337, 83044, 93756, 124566, 164674, 218789, 247011, 249132, 329348, 437578, 494022, 656367, 875156, 959797, 988044, 1070381, 1312734, 1919594, 2140762, 2625468, 2844257, 2879391, 3211143, 3839188, 4281524, 5688514, 5758782, 6422286, 8532771, 11377028, 11517564, 12477361, 12844572, 17065542, 24954722, 34131084, 37432083, 49909444, 74864166, 131492189, 149728332, 262984378, 394476567, 525968756, 788953134, 1577906268, 1709398457, 3418796914, 5128195371, 6837593828, 10256390742, 20512781484]

約数ペア:

[(1, 20512781484), (2, 10256390742), (3, 6837593828), (4, 5128195371), (6, 3418796914), (12, 1709398457), (13, 1577906268), (26, 788953134), (39, 525968756), (52, 394476567), (78, 262984378), (137, 149728332), (156, 131492189), (274, 74864166), (411, 49909444), (548, 37432083), (601, 34131084), (822, 24954722), (1202, 17065542), (1597, 12844572), (1644, 12477361), (1781, 11517564), (1803, 11377028), (2404, 8532771), (3194, 6422286), (3562, 5758782), (3606, 5688514), (4791, 4281524), (5343, 3839188), (6388, 3211143), (7124, 2879391), (7212, 2844257), (7813, 2625468), (9582, 2140762), (10686, 1919594), (15626, 1312734), (19164, 1070381), (20761, 988044), (21372, 959797), (23439, 875156), (31252, 656367), (41522, 494022), (46878, 437578), (62283, 329348), (82337, 249132), (83044, 247011), (93756, 218789), (124566, 164674)]