309780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1721}}^1$

素因数の和:1736

約数の個数: 36

約数和(自身を含む): 940212

約数和(自身を除く): 630432

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1721, 3442, 5163, 6884, 8605, 10326, 15489, 17210, 20652, 25815, 30978, 34420, 51630, 61956, 77445, 103260, 154890, 309780]

約数ペア:

[(1, 309780), (2, 154890), (3, 103260), (4, 77445), (5, 61956), (6, 51630), (9, 34420), (10, 30978), (12, 25815), (15, 20652), (18, 17210), (20, 15489), (30, 10326), (36, 8605), (45, 6884), (60, 5163), (90, 3442), (180, 1721)]