21383181

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{347}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 31921344

約数和(自身を除く): 10538163

約数列:

[1, 3, 9, 41, 123, 167, 347, 369, 501, 1041, 1503, 3123, 6847, 14227, 20541, 42681, 57949, 61623, 128043, 173847, 521541, 2375909, 7127727, 21383181]

約数ペア:

[(1, 21383181), (3, 7127727), (9, 2375909), (41, 521541), (123, 173847), (167, 128043), (347, 61623), (369, 57949), (501, 42681), (1041, 20541), (1503, 14227), (3123, 6847)]