21003864

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 128

約数和(自身を含む): 64204800

約数和(自身を除く): 43200936

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 37, 42, 56, 62, 74, 84, 93, 109, 111, 124, 148, 168, 186, 217, 218, 222, 248, 259, 296, 327, 372, 434, 436, 444, 518, 651, 654, 744, 763, 777, 868, 872, 888, 1036, 1147, 1302, 1308, 1526, 1554, 1736, 2072, 2289, 2294, 2604, 2616, 3052, 3108, 3379, 3441, 4033, 4578, 4588, 5208, 6104, 6216, 6758, 6882, 8029, 8066, 9156, 9176, 10137, 12099, 13516, 13764, 16058, 16132, 18312, 20274, 23653, 24087, 24198, 27032, 27528, 28231, 32116, 32264, 40548, 47306, 48174, 48396, 56462, 64232, 70959, 81096, 84693, 94612, 96348, 96792, 112924, 125023, 141918, 169386, 189224, 192696, 225848, 250046, 283836, 338772, 375069, 500092, 567672, 677544, 750138, 875161, 1000184, 1500276, 1750322, 2625483, 3000552, 3500644, 5250966, 7001288, 10501932, 21003864]

約数ペア:

[(1, 21003864), (2, 10501932), (3, 7001288), (4, 5250966), (6, 3500644), (7, 3000552), (8, 2625483), (12, 1750322), (14, 1500276), (21, 1000184), (24, 875161), (28, 750138), (31, 677544), (37, 567672), (42, 500092), (56, 375069), (62, 338772), (74, 283836), (84, 250046), (93, 225848), (109, 192696), (111, 189224), (124, 169386), (148, 141918), (168, 125023), (186, 112924), (217, 96792), (218, 96348), (222, 94612), (248, 84693), (259, 81096), (296, 70959), (327, 64232), (372, 56462), (434, 48396), (436, 48174), (444, 47306), (518, 40548), (651, 32264), (654, 32116), (744, 28231), (763, 27528), (777, 27032), (868, 24198), (872, 24087), (888, 23653), (1036, 20274), (1147, 18312), (1302, 16132), (1308, 16058), (1526, 13764), (1554, 13516), (1736, 12099), (2072, 10137), (2289, 9176), (2294, 9156), (2604, 8066), (2616, 8029), (3052, 6882), (3108, 6758), (3379, 6216), (3441, 6104), (4033, 5208), (4578, 4588)]