21953239

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 29970432

約数和(自身を除く): 8017193

約数列:

[1, 7, 11, 17, 31, 77, 119, 187, 217, 341, 527, 541, 1309, 2387, 3689, 3787, 5797, 5951, 9197, 16771, 40579, 41657, 64379, 101167, 117397, 184481, 285107, 708169, 1291367, 1995749, 3136177, 21953239]

約数ペア:

[(1, 21953239), (7, 3136177), (11, 1995749), (17, 1291367), (31, 708169), (77, 285107), (119, 184481), (187, 117397), (217, 101167), (341, 64379), (527, 41657), (541, 40579), (1309, 16771), (2387, 9197), (3689, 5951), (3787, 5797)]