21140616

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:251

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 44523384

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 37, 38, 42, 56, 57, 74, 76, 84, 111, 114, 133, 148, 152, 168, 179, 222, 228, 259, 266, 296, 358, 399, 444, 456, 518, 532, 537, 703, 716, 777, 798, 888, 1036, 1064, 1074, 1253, 1406, 1432, 1554, 1596, 2072, 2109, 2148, 2506, 2812, 3108, 3192, 3401, 3759, 4218, 4296, 4921, 5012, 5624, 6216, 6623, 6802, 7518, 8436, 9842, 10024, 10203, 13246, 13604, 14763, 15036, 16872, 19684, 19869, 20406, 23807, 26492, 27208, 29526, 30072, 39368, 39738, 40812, 46361, 47614, 52984, 59052, 71421, 79476, 81624, 92722, 95228, 118104, 125837, 139083, 142842, 158952, 185444, 190456, 251674, 278166, 285684, 370888, 377511, 503348, 556332, 571368, 755022, 880859, 1006696, 1112664, 1510044, 1761718, 2642577, 3020088, 3523436, 5285154, 7046872, 10570308, 21140616]

約数ペア:

[(1, 21140616), (2, 10570308), (3, 7046872), (4, 5285154), (6, 3523436), (7, 3020088), (8, 2642577), (12, 1761718), (14, 1510044), (19, 1112664), (21, 1006696), (24, 880859), (28, 755022), (37, 571368), (38, 556332), (42, 503348), (56, 377511), (57, 370888), (74, 285684), (76, 278166), (84, 251674), (111, 190456), (114, 185444), (133, 158952), (148, 142842), (152, 139083), (168, 125837), (179, 118104), (222, 95228), (228, 92722), (259, 81624), (266, 79476), (296, 71421), (358, 59052), (399, 52984), (444, 47614), (456, 46361), (518, 40812), (532, 39738), (537, 39368), (703, 30072), (716, 29526), (777, 27208), (798, 26492), (888, 23807), (1036, 20406), (1064, 19869), (1074, 19684), (1253, 16872), (1406, 15036), (1432, 14763), (1554, 13604), (1596, 13246), (2072, 10203), (2109, 10024), (2148, 9842), (2506, 8436), (2812, 7518), (3108, 6802), (3192, 6623), (3401, 6216), (3759, 5624), (4218, 5012), (4296, 4921)]