18919728

素因数分解:

$2^4\times 3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 56233008

約数和(自身を除く): 37313280

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 37, 48, 53, 67, 72, 74, 106, 111, 134, 144, 148, 159, 201, 212, 222, 268, 296, 318, 333, 402, 424, 444, 477, 536, 592, 603, 636, 666, 804, 848, 888, 954, 1072, 1206, 1272, 1332, 1608, 1776, 1908, 1961, 2412, 2479, 2544, 2664, 3216, 3551, 3816, 3922, 4824, 4958, 5328, 5883, 7102, 7437, 7632, 7844, 9648, 9916, 10653, 11766, 14204, 14874, 15688, 17649, 19832, 21306, 22311, 23532, 28408, 29748, 31376, 31959, 35298, 39664, 42612, 44622, 47064, 56816, 59496, 63918, 70596, 85224, 89244, 94128, 118992, 127836, 131387, 141192, 170448, 178488, 255672, 262774, 282384, 356976, 394161, 511344, 525548, 788322, 1051096, 1182483, 1576644, 2102192, 2364966, 3153288, 4729932, 6306576, 9459864, 18919728]

約数ペア:

[(1, 18919728), (2, 9459864), (3, 6306576), (4, 4729932), (6, 3153288), (8, 2364966), (9, 2102192), (12, 1576644), (16, 1182483), (18, 1051096), (24, 788322), (36, 525548), (37, 511344), (48, 394161), (53, 356976), (67, 282384), (72, 262774), (74, 255672), (106, 178488), (111, 170448), (134, 141192), (144, 131387), (148, 127836), (159, 118992), (201, 94128), (212, 89244), (222, 85224), (268, 70596), (296, 63918), (318, 59496), (333, 56816), (402, 47064), (424, 44622), (444, 42612), (477, 39664), (536, 35298), (592, 31959), (603, 31376), (636, 29748), (666, 28408), (804, 23532), (848, 22311), (888, 21306), (954, 19832), (1072, 17649), (1206, 15688), (1272, 14874), (1332, 14204), (1608, 11766), (1776, 10653), (1908, 9916), (1961, 9648), (2412, 7844), (2479, 7632), (2544, 7437), (2664, 7102), (3216, 5883), (3551, 5328), (3816, 4958), (3922, 4824)]