205180020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{379963}}^1$

素因数の和:379981

約数の個数: 48

約数和(自身を含む): 638339520

約数和(自身を除く): 433159500

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, 379963, 759926, 1139889, 1519852, 1899815, 2279778, 3419667, 3799630, 4559556, 5699445, 6839334, 7599260, 10259001, 11398890, 13678668, 17098335, 20518002, 22797780, 34196670, 41036004, 51295005, 68393340, 102590010, 205180020]

約数ペア:

[(1, 205180020), (2, 102590010), (3, 68393340), (4, 51295005), (5, 41036004), (6, 34196670), (9, 22797780), (10, 20518002), (12, 17098335), (15, 13678668), (18, 11398890), (20, 10259001), (27, 7599260), (30, 6839334), (36, 5699445), (45, 4559556), (54, 3799630), (60, 3419667), (90, 2279778), (108, 1899815), (135, 1519852), (180, 1139889), (270, 759926), (540, 379963)]