21407745

素因数分解:

$3^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1609}}^1$

素因数の和:2504

約数の個数: 16

約数和(自身を含む): 34312320

約数和(自身を除く): 12904575

約数列:

[1, 3, 5, 15, 887, 1609, 2661, 4435, 4827, 8045, 13305, 24135, 1427183, 4281549, 7135915, 21407745]

約数ペア:

[(1, 21407745), (3, 7135915), (5, 4281549), (15, 1427183), (887, 24135), (1609, 13305), (2661, 8045), (4435, 4827)]