21945180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 64157184

約数和(自身を除く): 42212004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 67, 103, 106, 134, 159, 201, 206, 212, 265, 268, 309, 318, 335, 402, 412, 515, 530, 618, 636, 670, 795, 804, 1005, 1030, 1060, 1236, 1340, 1545, 1590, 2010, 2060, 3090, 3180, 3551, 4020, 5459, 6180, 6901, 7102, 10653, 10918, 13802, 14204, 16377, 17755, 20703, 21306, 21836, 27295, 27604, 32754, 34505, 35510, 41406, 42612, 53265, 54590, 65508, 69010, 71020, 81885, 82812, 103515, 106530, 109180, 138020, 163770, 207030, 213060, 327540, 365753, 414060, 731506, 1097259, 1463012, 1828765, 2194518, 3657530, 4389036, 5486295, 7315060, 10972590, 21945180]

約数ペア:

[(1, 21945180), (2, 10972590), (3, 7315060), (4, 5486295), (5, 4389036), (6, 3657530), (10, 2194518), (12, 1828765), (15, 1463012), (20, 1097259), (30, 731506), (53, 414060), (60, 365753), (67, 327540), (103, 213060), (106, 207030), (134, 163770), (159, 138020), (201, 109180), (206, 106530), (212, 103515), (265, 82812), (268, 81885), (309, 71020), (318, 69010), (335, 65508), (402, 54590), (412, 53265), (515, 42612), (530, 41406), (618, 35510), (636, 34505), (670, 32754), (795, 27604), (804, 27295), (1005, 21836), (1030, 21306), (1060, 20703), (1236, 17755), (1340, 16377), (1545, 14204), (1590, 13802), (2010, 10918), (2060, 10653), (3090, 7102), (3180, 6901), (3551, 6180), (4020, 5459)]