20808928

素因数分解:

$2^5\times 7^2\times {\mathrm{23}}^1\times {\mathrm{577}}^1$

素因数の和:624

約数の個数: 72

約数和(自身を含む): 49814352

約数和(自身を除く): 29005424

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 49, 56, 92, 98, 112, 161, 184, 196, 224, 322, 368, 392, 577, 644, 736, 784, 1127, 1154, 1288, 1568, 2254, 2308, 2576, 4039, 4508, 4616, 5152, 8078, 9016, 9232, 13271, 16156, 18032, 18464, 26542, 28273, 32312, 36064, 53084, 56546, 64624, 92897, 106168, 113092, 129248, 185794, 212336, 226184, 371588, 424672, 452368, 650279, 743176, 904736, 1300558, 1486352, 2601116, 2972704, 5202232, 10404464, 20808928]

約数ペア:

[(1, 20808928), (2, 10404464), (4, 5202232), (7, 2972704), (8, 2601116), (14, 1486352), (16, 1300558), (23, 904736), (28, 743176), (32, 650279), (46, 452368), (49, 424672), (56, 371588), (92, 226184), (98, 212336), (112, 185794), (161, 129248), (184, 113092), (196, 106168), (224, 92897), (322, 64624), (368, 56546), (392, 53084), (577, 36064), (644, 32312), (736, 28273), (784, 26542), (1127, 18464), (1154, 18032), (1288, 16156), (1568, 13271), (2254, 9232), (2308, 9016), (2576, 8078), (4039, 5152), (4508, 4616)]