19212813

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:465

約数の個数: 24

約数和(自身を含む): 28506816

約数和(自身を除く): 9294003

約数列:

[1, 3, 9, 71, 107, 213, 281, 321, 639, 843, 963, 2529, 7597, 19951, 22791, 30067, 59853, 68373, 90201, 179559, 270603, 2134757, 6404271, 19212813]

約数ペア:

[(1, 19212813), (3, 6404271), (9, 2134757), (71, 270603), (107, 179559), (213, 90201), (281, 68373), (321, 59853), (639, 30067), (843, 22791), (963, 19951), (2529, 7597)]