20784505

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7517}}^1$

素因数の和:7608

約数の個数: 16

約数和(自身を含む): 28869120

約数和(自身を除く): 8084615

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 7517, 37585, 52619, 263095, 593843, 2969215, 4156901, 20784505]

約数ペア:

[(1, 20784505), (5, 4156901), (7, 2969215), (35, 593843), (79, 263095), (395, 52619), (553, 37585), (2765, 7517)]