42180820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1759}}^1$

素因数の和:1888

約数の個数: 48

約数和(自身を含む): 97574400

約数和(自身を除く): 55393580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1199, 1759, 2180, 2398, 3518, 4796, 5995, 7036, 8795, 11990, 17590, 19349, 23980, 35180, 38698, 77396, 96745, 191731, 193490, 383462, 386980, 766924, 958655, 1917310, 2109041, 3834620, 4218082, 8436164, 10545205, 21090410, 42180820]

約数ペア:

[(1, 42180820), (2, 21090410), (4, 10545205), (5, 8436164), (10, 4218082), (11, 3834620), (20, 2109041), (22, 1917310), (44, 958655), (55, 766924), (109, 386980), (110, 383462), (218, 193490), (220, 191731), (436, 96745), (545, 77396), (1090, 38698), (1199, 35180), (1759, 23980), (2180, 19349), (2398, 17590), (3518, 11990), (4796, 8795), (5995, 7036)]