20684965

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7481}}^1$

素因数の和:7572

約数の個数: 16

約数和(自身を含む): 28730880

約数和(自身を除く): 8045915

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 7481, 37405, 52367, 261835, 590999, 2954995, 4136993, 20684965]

約数ペア:

[(1, 20684965), (5, 4136993), (7, 2954995), (35, 590999), (79, 261835), (395, 52367), (553, 37405), (2765, 7481)]