21815743

素因数分解:

${\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 25419600

約数和(自身を除く): 3603857

約数列:

[1, 17, 19, 29, 137, 289, 323, 493, 551, 2329, 2603, 3973, 5491, 8381, 9367, 39593, 44251, 67541, 75487, 159239, 752267, 1148197, 1283279, 21815743]

約数ペア:

[(1, 21815743), (17, 1283279), (19, 1148197), (29, 752267), (137, 159239), (289, 75487), (323, 67541), (493, 44251), (551, 39593), (2329, 9367), (2603, 8381), (3973, 5491)]