19775015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6473}}^1$

素因数の和:6538

約数の個数: 16

約数和(自身を含む): 26103168

約数和(自身を除く): 6328153

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6473, 32365, 84149, 304231, 420745, 1521155, 3955003, 19775015]

約数ペア:

[(1, 19775015), (5, 3955003), (13, 1521155), (47, 420745), (65, 304231), (235, 84149), (611, 32365), (3055, 6473)]