21626788

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{881}}^1$

素因数の和:940

約数の個数: 36

約数和(自身を含む): 42341292

約数和(自身を除く): 20714504

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 361, 646, 722, 881, 1292, 1444, 1762, 3524, 6137, 12274, 14977, 16739, 24548, 29954, 33478, 59908, 66956, 284563, 318041, 569126, 636082, 1138252, 1272164, 5406697, 10813394, 21626788]

約数ペア:

[(1, 21626788), (2, 10813394), (4, 5406697), (17, 1272164), (19, 1138252), (34, 636082), (38, 569126), (68, 318041), (76, 284563), (323, 66956), (361, 59908), (646, 33478), (722, 29954), (881, 24548), (1292, 16739), (1444, 14977), (1762, 12274), (3524, 6137)]