20888120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1637}}^1$

素因数の和:1688

約数の個数: 64

約数和(自身を含む): 53071200

約数和(自身を除く): 32183080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 1637, 2552, 3190, 3274, 6380, 6548, 8185, 12760, 13096, 16370, 18007, 32740, 36014, 47473, 65480, 72028, 90035, 94946, 144056, 180070, 189892, 237365, 360140, 379784, 474730, 522203, 720280, 949460, 1044406, 1898920, 2088812, 2611015, 4177624, 5222030, 10444060, 20888120]

約数ペア:

[(1, 20888120), (2, 10444060), (4, 5222030), (5, 4177624), (8, 2611015), (10, 2088812), (11, 1898920), (20, 1044406), (22, 949460), (29, 720280), (40, 522203), (44, 474730), (55, 379784), (58, 360140), (88, 237365), (110, 189892), (116, 180070), (145, 144056), (220, 94946), (232, 90035), (290, 72028), (319, 65480), (440, 47473), (580, 36014), (638, 32740), (1160, 18007), (1276, 16370), (1595, 13096), (1637, 12760), (2552, 8185), (3190, 6548), (3274, 6380)]