18656172

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 49562240

約数和(自身を除く): 30906068

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 73, 93, 124, 146, 186, 219, 229, 279, 292, 372, 438, 458, 558, 657, 687, 876, 916, 1116, 1314, 1374, 2061, 2263, 2628, 2748, 4122, 4526, 6789, 7099, 8244, 9052, 13578, 14198, 16717, 20367, 21297, 27156, 28396, 33434, 40734, 42594, 50151, 63891, 66868, 81468, 85188, 100302, 127782, 150453, 200604, 255564, 300906, 518227, 601812, 1036454, 1554681, 2072908, 3109362, 4664043, 6218724, 9328086, 18656172]

約数ペア:

[(1, 18656172), (2, 9328086), (3, 6218724), (4, 4664043), (6, 3109362), (9, 2072908), (12, 1554681), (18, 1036454), (31, 601812), (36, 518227), (62, 300906), (73, 255564), (93, 200604), (124, 150453), (146, 127782), (186, 100302), (219, 85188), (229, 81468), (279, 66868), (292, 63891), (372, 50151), (438, 42594), (458, 40734), (558, 33434), (657, 28396), (687, 27156), (876, 21297), (916, 20367), (1116, 16717), (1314, 14198), (1374, 13578), (2061, 9052), (2263, 8244), (2628, 7099), (2748, 6789), (4122, 4526)]