20500025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9011}}^1$

素因数の和:9041

約数の個数: 24

約数和(自身を含む): 31289664

約数和(自身を除く): 10789639

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9011, 45055, 63077, 117143, 225275, 315385, 585715, 820001, 1576925, 2928575, 4100005, 20500025]

約数ペア:

[(1, 20500025), (5, 4100005), (7, 2928575), (13, 1576925), (25, 820001), (35, 585715), (65, 315385), (91, 225275), (175, 117143), (325, 63077), (455, 45055), (2275, 9011)]