217617820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{222059}}^1$

素因数の和:222082

約数の個数: 36

約数和(自身を含む): 531611640

約数和(自身を除く): 313993820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 222059, 444118, 888236, 1110295, 1554413, 2220590, 3108826, 4441180, 6217652, 7772065, 10880891, 15544130, 21761782, 31088260, 43523564, 54404455, 108808910, 217617820]

約数ペア:

[(1, 217617820), (2, 108808910), (4, 54404455), (5, 43523564), (7, 31088260), (10, 21761782), (14, 15544130), (20, 10880891), (28, 7772065), (35, 6217652), (49, 4441180), (70, 3108826), (98, 2220590), (140, 1554413), (196, 1110295), (245, 888236), (490, 444118), (980, 222059)]