20003974

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{7129}}^1$

素因数の和:7215

約数の個数: 16

約数和(自身を含む): 31828320

約数和(自身を除く): 11824346

約数列:

[1, 2, 23, 46, 61, 122, 1403, 2806, 7129, 14258, 163967, 327934, 434869, 869738, 10001987, 20003974]

約数ペア:

[(1, 20003974), (2, 10001987), (23, 869738), (46, 434869), (61, 327934), (122, 163967), (1403, 14258), (2806, 7129)]