19975540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76829}}^1$

素因数の和:76851

約数の個数: 24

約数和(自身を含む): 45176040

約数和(自身を除く): 25200500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76829, 153658, 307316, 384145, 768290, 998777, 1536580, 1997554, 3995108, 4993885, 9987770, 19975540]

約数ペア:

[(1, 19975540), (2, 9987770), (4, 4993885), (5, 3995108), (10, 1997554), (13, 1536580), (20, 998777), (26, 768290), (52, 384145), (65, 307316), (130, 153658), (260, 76829)]