20875645

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{4003}}^1$

素因数の和:4164

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7953155

約数列:

[1, 5, 7, 35, 149, 745, 1043, 4003, 5215, 20015, 28021, 140105, 596447, 2982235, 4175129, 20875645]

約数ペア:

[(1, 20875645), (5, 4175129), (7, 2982235), (35, 596447), (149, 140105), (745, 28021), (1043, 20015), (4003, 5215)]