21384153

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1723}}^1$

素因数の和:1933

約数の個数: 24

約数和(自身を含む): 35500608

約数和(自身を除く): 14116455

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1723, 1773, 4137, 5169, 12061, 12411, 15507, 36183, 108549, 339431, 1018293, 2376017, 3054879, 7128051, 21384153]

約数ペア:

[(1, 21384153), (3, 7128051), (7, 3054879), (9, 2376017), (21, 1018293), (63, 339431), (197, 108549), (591, 36183), (1379, 15507), (1723, 12411), (1773, 12061), (4137, 5169)]