21317784

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 55836000

約数和(自身を除く): 34518216

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 109, 116, 174, 218, 232, 281, 327, 348, 436, 562, 654, 696, 843, 872, 1124, 1308, 1686, 2248, 2616, 3161, 3372, 6322, 6744, 8149, 9483, 12644, 16298, 18966, 24447, 25288, 30629, 32596, 37932, 48894, 61258, 65192, 75864, 91887, 97788, 122516, 183774, 195576, 245032, 367548, 735096, 888241, 1776482, 2664723, 3552964, 5329446, 7105928, 10658892, 21317784]

約数ペア:

[(1, 21317784), (2, 10658892), (3, 7105928), (4, 5329446), (6, 3552964), (8, 2664723), (12, 1776482), (24, 888241), (29, 735096), (58, 367548), (87, 245032), (109, 195576), (116, 183774), (174, 122516), (218, 97788), (232, 91887), (281, 75864), (327, 65192), (348, 61258), (436, 48894), (562, 37932), (654, 32596), (696, 30629), (843, 25288), (872, 24447), (1124, 18966), (1308, 16298), (1686, 12644), (2248, 9483), (2616, 8149), (3161, 6744), (3372, 6322)]