21892255

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{563}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 33136128

約数和(自身を除く): 11243873

約数列:

[1, 5, 7, 11, 35, 55, 77, 101, 385, 505, 563, 707, 1111, 2815, 3535, 3941, 5555, 6193, 7777, 19705, 30965, 38885, 43351, 56863, 216755, 284315, 398041, 625493, 1990205, 3127465, 4378451, 21892255]

約数ペア:

[(1, 21892255), (5, 4378451), (7, 3127465), (11, 1990205), (35, 625493), (55, 398041), (77, 284315), (101, 216755), (385, 56863), (505, 43351), (563, 38885), (707, 30965), (1111, 19705), (2815, 7777), (3535, 6193), (3941, 5555)]