19990982

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{4003}}^1$

素因数の和:4243

約数の個数: 16

約数和(自身を含む): 32864832

約数和(自身を除く): 12873850

約数列:

[1, 2, 11, 22, 227, 454, 2497, 4003, 4994, 8006, 44033, 88066, 908681, 1817362, 9995491, 19990982]

約数ペア:

[(1, 19990982), (2, 9995491), (11, 1817362), (22, 908681), (227, 88066), (454, 44033), (2497, 8006), (4003, 4994)]