18739812

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^2$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 54230848

約数和(自身を除く): 35491036

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 131, 156, 182, 262, 273, 364, 393, 524, 546, 786, 917, 1092, 1572, 1703, 1834, 2751, 3406, 3668, 5109, 5502, 6812, 10218, 11004, 11921, 17161, 20436, 23842, 34322, 35763, 47684, 51483, 68644, 71526, 102966, 120127, 143052, 205932, 223093, 240254, 360381, 446186, 480508, 669279, 720762, 892372, 1338558, 1441524, 1561651, 2677116, 3123302, 4684953, 6246604, 9369906, 18739812]

約数ペア:

[(1, 18739812), (2, 9369906), (3, 6246604), (4, 4684953), (6, 3123302), (7, 2677116), (12, 1561651), (13, 1441524), (14, 1338558), (21, 892372), (26, 720762), (28, 669279), (39, 480508), (42, 446186), (52, 360381), (78, 240254), (84, 223093), (91, 205932), (131, 143052), (156, 120127), (182, 102966), (262, 71526), (273, 68644), (364, 51483), (393, 47684), (524, 35763), (546, 34322), (786, 23842), (917, 20436), (1092, 17161), (1572, 11921), (1703, 11004), (1834, 10218), (2751, 6812), (3406, 5502), (3668, 5109)]