21916209

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14699}}^1$

素因数の和:14780

約数の個数: 16

約数和(自身を含む): 33868800

約数和(自身を除く): 11952591

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14699, 44097, 102893, 308679, 1043629, 3130887, 7305403, 21916209]

約数ペア:

[(1, 21916209), (3, 7305403), (7, 3130887), (21, 1043629), (71, 308679), (213, 102893), (497, 44097), (1491, 14699)]