19707950

素因数分解:

$2^1\times 5^2\times {\mathrm{613}}^1\times {\mathrm{643}}^1$

素因数の和:1268

約数の個数: 24

約数和(自身を含む): 36773688

約数和(自身を除く): 17065738

約数列:

[1, 2, 5, 10, 25, 50, 613, 643, 1226, 1286, 3065, 3215, 6130, 6430, 15325, 16075, 30650, 32150, 394159, 788318, 1970795, 3941590, 9853975, 19707950]

約数ペア:

[(1, 19707950), (2, 9853975), (5, 3941590), (10, 1970795), (25, 788318), (50, 394159), (613, 32150), (643, 30650), (1226, 16075), (1286, 15325), (3065, 6430), (3215, 6130)]