21558559

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 25511760

約数和(自身を除く): 3953201

約数列:

[1, 11, 19, 61, 89, 209, 361, 671, 979, 1159, 1691, 3971, 5429, 12749, 18601, 22021, 32129, 59719, 103151, 242231, 353419, 1134661, 1959869, 21558559]

約数ペア:

[(1, 21558559), (11, 1959869), (19, 1134661), (61, 353419), (89, 242231), (209, 103151), (361, 59719), (671, 32129), (979, 22021), (1159, 18601), (1691, 12749), (3971, 5429)]