21691260

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{40169}}^1$

素因数の和:40187

約数の個数: 48

約数和(自身を含む): 67485600

約数和(自身を除く): 45794340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 40169, 80338, 120507, 160676, 200845, 241014, 361521, 401690, 482028, 602535, 723042, 803380, 1084563, 1205070, 1446084, 1807605, 2169126, 2410140, 3615210, 4338252, 5422815, 7230420, 10845630, 21691260]

約数ペア:

[(1, 21691260), (2, 10845630), (3, 7230420), (4, 5422815), (5, 4338252), (6, 3615210), (9, 2410140), (10, 2169126), (12, 1807605), (15, 1446084), (18, 1205070), (20, 1084563), (27, 803380), (30, 723042), (36, 602535), (45, 482028), (54, 401690), (60, 361521), (90, 241014), (108, 200845), (135, 160676), (180, 120507), (270, 80338), (540, 40169)]