213079985

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{2099}}^1$

素因数の和:2440

約数の個数: 16

約数和(自身を含む): 260064000

約数和(自身を除く): 46984015

約数列:

[1, 5, 79, 257, 395, 1285, 2099, 10495, 20303, 101515, 165821, 539443, 829105, 2697215, 42615997, 213079985]

約数ペア:

[(1, 213079985), (5, 42615997), (79, 2697215), (257, 829105), (395, 539443), (1285, 165821), (2099, 101515), (10495, 20303)]