20026820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 49230720

約数和(自身を除く): 29203900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 43, 44, 55, 58, 73, 86, 110, 116, 145, 146, 172, 215, 220, 290, 292, 319, 365, 430, 473, 580, 638, 730, 803, 860, 946, 1247, 1276, 1460, 1595, 1606, 1892, 2117, 2365, 2494, 3139, 3190, 3212, 4015, 4234, 4730, 4988, 6235, 6278, 6380, 8030, 8468, 9460, 10585, 12470, 12556, 13717, 15695, 16060, 21170, 23287, 24940, 27434, 31390, 34529, 42340, 46574, 54868, 62780, 68585, 69058, 91031, 93148, 116435, 137170, 138116, 172645, 182062, 232870, 274340, 345290, 364124, 455155, 465740, 690580, 910310, 1001341, 1820620, 2002682, 4005364, 5006705, 10013410, 20026820]

約数ペア:

[(1, 20026820), (2, 10013410), (4, 5006705), (5, 4005364), (10, 2002682), (11, 1820620), (20, 1001341), (22, 910310), (29, 690580), (43, 465740), (44, 455155), (55, 364124), (58, 345290), (73, 274340), (86, 232870), (110, 182062), (116, 172645), (145, 138116), (146, 137170), (172, 116435), (215, 93148), (220, 91031), (290, 69058), (292, 68585), (319, 62780), (365, 54868), (430, 46574), (473, 42340), (580, 34529), (638, 31390), (730, 27434), (803, 24940), (860, 23287), (946, 21170), (1247, 16060), (1276, 15695), (1460, 13717), (1595, 12556), (1606, 12470), (1892, 10585), (2117, 9460), (2365, 8468), (2494, 8030), (3139, 6380), (3190, 6278), (3212, 6235), (4015, 4988), (4234, 4730)]