21373815

素因数分解:

$3^1\times 5^1\times {\mathrm{827}}^1\times {\mathrm{1723}}^1$

素因数の和:2558

約数の個数: 16

約数和(自身を含む): 34259328

約数和(自身を除く): 12885513

約数列:

[1, 3, 5, 15, 827, 1723, 2481, 4135, 5169, 8615, 12405, 25845, 1424921, 4274763, 7124605, 21373815]

約数ペア:

[(1, 21373815), (3, 7124605), (5, 4274763), (15, 1424921), (827, 25845), (1723, 12405), (2481, 8615), (4135, 5169)]