21715135

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{761}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 28163520

約数和(自身を除く): 6448385

約数列:

[1, 5, 13, 65, 439, 761, 2195, 3805, 5707, 9893, 28535, 49465, 334079, 1670395, 4343027, 21715135]

約数ペア:

[(1, 21715135), (5, 4343027), (13, 1670395), (65, 334079), (439, 49465), (761, 28535), (2195, 9893), (3805, 5707)]