21227193

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{457}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 33175688

約数和(自身を除く): 11948495

約数列:

[1, 3, 9, 13, 39, 117, 397, 457, 1191, 1371, 3573, 4113, 5161, 5941, 15483, 17823, 46449, 53469, 181429, 544287, 1632861, 2358577, 7075731, 21227193]

約数ペア:

[(1, 21227193), (3, 7075731), (9, 2358577), (13, 1632861), (39, 544287), (117, 181429), (397, 53469), (457, 46449), (1191, 17823), (1371, 15483), (3573, 5941), (4113, 5161)]