21488157

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{373}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 32147544

約数和(自身を除く): 10659387

約数列:

[1, 3, 9, 37, 111, 173, 333, 373, 519, 1119, 1557, 3357, 6401, 13801, 19203, 41403, 57609, 64529, 124209, 193587, 580761, 2387573, 7162719, 21488157]

約数ペア:

[(1, 21488157), (3, 7162719), (9, 2387573), (37, 580761), (111, 193587), (173, 124209), (333, 64529), (373, 57609), (519, 41403), (1119, 19203), (1557, 13801), (3357, 6401)]