21453897

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{601}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 29223488

約数和(自身を除く): 7769591

約数列:

[1, 3, 73, 163, 219, 489, 601, 1803, 11899, 35697, 43873, 97963, 131619, 293889, 7151299, 21453897]

約数ペア:

[(1, 21453897), (3, 7151299), (73, 293889), (163, 131619), (219, 97963), (489, 43873), (601, 35697), (1803, 11899)]