21090728

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64301}}^1$

素因数の和:64348

約数の個数: 16

約数和(自身を含む): 40510260

約数和(自身を除く): 19419532

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64301, 128602, 257204, 514408, 2636341, 5272682, 10545364, 21090728]

約数ペア:

[(1, 21090728), (2, 10545364), (4, 5272682), (8, 2636341), (41, 514408), (82, 257204), (164, 128602), (328, 64301)]