217389780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1207721}}^1$

素因数の和:1207736

約数の個数: 36

約数和(自身を含む): 659416212

約数和(自身を除く): 442026432

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1207721, 2415442, 3623163, 4830884, 6038605, 7246326, 10869489, 12077210, 14492652, 18115815, 21738978, 24154420, 36231630, 43477956, 54347445, 72463260, 108694890, 217389780]

約数ペア:

[(1, 217389780), (2, 108694890), (3, 72463260), (4, 54347445), (5, 43477956), (6, 36231630), (9, 24154420), (10, 21738978), (12, 18115815), (15, 14492652), (18, 12077210), (20, 10869489), (30, 7246326), (36, 6038605), (45, 4830884), (60, 3623163), (90, 2415442), (180, 1207721)]