21285019

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{379}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 24952320

約数和(自身を除く): 3667301

約数列:

[1, 7, 71, 113, 379, 497, 791, 2653, 8023, 26909, 42827, 56161, 188363, 299789, 3040717, 21285019]

約数ペア:

[(1, 21285019), (7, 3040717), (71, 299789), (113, 188363), (379, 56161), (497, 42827), (791, 26909), (2653, 8023)]