21193695

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20477}}^1$

素因数の和:20511

約数の個数: 24

約数和(自身を含む): 38334816

約数和(自身を除く): 17141121

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20477, 61431, 102385, 184293, 307155, 470971, 921465, 1412913, 2354855, 4238739, 7064565, 21193695]

約数ペア:

[(1, 21193695), (3, 7064565), (5, 4238739), (9, 2354855), (15, 1412913), (23, 921465), (45, 470971), (69, 307155), (115, 184293), (207, 102385), (345, 61431), (1035, 20477)]