21005404

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{44129}}^1$

素因数の和:44157

約数の個数: 24

約数和(自身を含む): 44483040

約数和(自身を除く): 23477636

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 44129, 88258, 176516, 308903, 617806, 750193, 1235612, 1500386, 3000772, 5251351, 10502702, 21005404]

約数ペア:

[(1, 21005404), (2, 10502702), (4, 5251351), (7, 3000772), (14, 1500386), (17, 1235612), (28, 750193), (34, 617806), (68, 308903), (119, 176516), (238, 88258), (476, 44129)]