161680625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{15217}}^1$

素因数の和:15254

約数の個数: 20

約数和(自身を含む): 213934644

約数和(自身を除く): 52254019

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 2125, 10625, 15217, 76085, 258689, 380425, 1293445, 1902125, 6467225, 9510625, 32336125, 161680625]

約数ペア:

[(1, 161680625), (5, 32336125), (17, 9510625), (25, 6467225), (85, 1902125), (125, 1293445), (425, 380425), (625, 258689), (2125, 76085), (10625, 15217)]