21137480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5807}}^1$

素因数の和:5838

約数の個数: 64

約数和(自身を含む): 58544640

約数和(自身を除く): 37407160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5807, 11614, 23228, 29035, 40649, 46456, 58070, 75491, 81298, 116140, 150982, 162596, 203245, 232280, 301964, 325192, 377455, 406490, 528437, 603928, 754910, 812980, 1056874, 1509820, 1625960, 2113748, 2642185, 3019640, 4227496, 5284370, 10568740, 21137480]

約数ペア:

[(1, 21137480), (2, 10568740), (4, 5284370), (5, 4227496), (7, 3019640), (8, 2642185), (10, 2113748), (13, 1625960), (14, 1509820), (20, 1056874), (26, 812980), (28, 754910), (35, 603928), (40, 528437), (52, 406490), (56, 377455), (65, 325192), (70, 301964), (91, 232280), (104, 203245), (130, 162596), (140, 150982), (182, 116140), (260, 81298), (280, 75491), (364, 58070), (455, 46456), (520, 40649), (728, 29035), (910, 23228), (1820, 11614), (3640, 5807)]