21995578

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:654

約数の個数: 32

約数和(自身を含む): 38335680

約数和(自身を除く): 16340102

約数列:

[1, 2, 11, 19, 22, 38, 101, 202, 209, 418, 521, 1042, 1111, 1919, 2222, 3838, 5731, 9899, 11462, 19798, 21109, 42218, 52621, 105242, 108889, 217778, 578831, 999799, 1157662, 1999598, 10997789, 21995578]

約数ペア:

[(1, 21995578), (2, 10997789), (11, 1999598), (19, 1157662), (22, 999799), (38, 578831), (101, 217778), (202, 108889), (209, 105242), (418, 52621), (521, 42218), (1042, 21109), (1111, 19798), (1919, 11462), (2222, 9899), (3838, 5731)]