21059665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5393}}^1$

素因数の和:5480

約数の個数: 16

約数和(自身を含む): 27962496

約数和(自身を除く): 6902831

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 5393, 26965, 59323, 296615, 382903, 1914515, 4211933, 21059665]

約数ペア:

[(1, 21059665), (5, 4211933), (11, 1914515), (55, 382903), (71, 296615), (355, 59323), (781, 26965), (3905, 5393)]