21916251

素因数分解:

$3^4\times 7^1\times {\mathrm{38653}}^1$

素因数の和:38672

約数の個数: 20

約数和(自身を含む): 37417072

約数和(自身を除く): 15500821

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38653, 115959, 270571, 347877, 811713, 1043631, 2435139, 3130893, 7305417, 21916251]

約数ペア:

[(1, 21916251), (3, 7305417), (7, 3130893), (9, 2435139), (21, 1043631), (27, 811713), (63, 347877), (81, 270571), (189, 115959), (567, 38653)]