21284780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96749}}^1$

素因数の和:96769

約数の個数: 24

約数和(自身を含む): 48762000

約数和(自身を除く): 27477220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96749, 193498, 386996, 483745, 967490, 1064239, 1934980, 2128478, 4256956, 5321195, 10642390, 21284780]

約数ペア:

[(1, 21284780), (2, 10642390), (4, 5321195), (5, 4256956), (10, 2128478), (11, 1934980), (20, 1064239), (22, 967490), (44, 483745), (55, 386996), (110, 193498), (220, 96749)]