18907108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{997}}^1$

素因数の和:1443

約数の個数: 24

約数和(自身を含む): 36215424

約数和(自身を除く): 17308316

約数列:

[1, 2, 4, 11, 22, 44, 431, 862, 997, 1724, 1994, 3988, 4741, 9482, 10967, 18964, 21934, 43868, 429707, 859414, 1718828, 4726777, 9453554, 18907108]

約数ペア:

[(1, 18907108), (2, 9453554), (4, 4726777), (11, 1718828), (22, 859414), (44, 429707), (431, 43868), (862, 21934), (997, 18964), (1724, 10967), (1994, 9482), (3988, 4741)]