21321916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1871}}^1$

素因数の和:1930

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 26481476

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 148, 154, 259, 308, 407, 518, 814, 1036, 1628, 1871, 2849, 3742, 5698, 7484, 11396, 13097, 20581, 26194, 41162, 52388, 69227, 82324, 138454, 144067, 276908, 288134, 484589, 576268, 761497, 969178, 1522994, 1938356, 3045988, 5330479, 10660958, 21321916]

約数ペア:

[(1, 21321916), (2, 10660958), (4, 5330479), (7, 3045988), (11, 1938356), (14, 1522994), (22, 969178), (28, 761497), (37, 576268), (44, 484589), (74, 288134), (77, 276908), (148, 144067), (154, 138454), (259, 82324), (308, 69227), (407, 52388), (518, 41162), (814, 26194), (1036, 20581), (1628, 13097), (1871, 11396), (2849, 7484), (3742, 5698)]