21919355

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{1087}}^1$

素因数の和:1238

約数の個数: 16

約数和(自身を含む): 27287040

約数和(自身を除く): 5367685

約数列:

[1, 5, 37, 109, 185, 545, 1087, 4033, 5435, 20165, 40219, 118483, 201095, 592415, 4383871, 21919355]

約数ペア:

[(1, 21919355), (5, 4383871), (37, 592415), (109, 201095), (185, 118483), (545, 40219), (1087, 20165), (4033, 5435)]