20988742

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{8609}}^1$

素因数の和:8687

約数の個数: 16

約数和(自身を含む): 33475680

約数和(自身を除く): 12486938

約数列:

[1, 2, 23, 46, 53, 106, 1219, 2438, 8609, 17218, 198007, 396014, 456277, 912554, 10494371, 20988742]

約数ペア:

[(1, 20988742), (2, 10494371), (23, 912554), (46, 456277), (53, 396014), (106, 198007), (1219, 17218), (2438, 8609)]