21453488

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 50663424

約数和(自身を除く): 29209936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 37, 56, 62, 74, 112, 124, 148, 167, 217, 248, 259, 296, 334, 434, 496, 518, 592, 668, 868, 1036, 1147, 1169, 1336, 1736, 2072, 2294, 2338, 2672, 3472, 4144, 4588, 4676, 5177, 6179, 8029, 9176, 9352, 10354, 12358, 16058, 18352, 18704, 20708, 24716, 32116, 36239, 41416, 43253, 49432, 64232, 72478, 82832, 86506, 98864, 128464, 144956, 173012, 191549, 289912, 346024, 383098, 579824, 692048, 766196, 1340843, 1532392, 2681686, 3064784, 5363372, 10726744, 21453488]

約数ペア:

[(1, 21453488), (2, 10726744), (4, 5363372), (7, 3064784), (8, 2681686), (14, 1532392), (16, 1340843), (28, 766196), (31, 692048), (37, 579824), (56, 383098), (62, 346024), (74, 289912), (112, 191549), (124, 173012), (148, 144956), (167, 128464), (217, 98864), (248, 86506), (259, 82832), (296, 72478), (334, 64232), (434, 49432), (496, 43253), (518, 41416), (592, 36239), (668, 32116), (868, 24716), (1036, 20708), (1147, 18704), (1169, 18352), (1336, 16058), (1736, 12358), (2072, 10354), (2294, 9352), (2338, 9176), (2672, 8029), (3472, 6179), (4144, 5177), (4588, 4676)]