21664699

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 25444800

約数和(自身を除く): 3780101

約数列:

[1, 7, 61, 113, 427, 449, 791, 3143, 6893, 27389, 48251, 50737, 191723, 355159, 3094957, 21664699]

約数ペア:

[(1, 21664699), (7, 3094957), (61, 355159), (113, 191723), (427, 50737), (449, 48251), (791, 27389), (3143, 6893)]