21820395

素因数分解:

$3^1\times 5^1\times {\mathrm{827}}^1\times {\mathrm{1759}}^1$

素因数の和:2594

約数の個数: 16

約数和(自身を含む): 34974720

約数和(自身を除く): 13154325

約数列:

[1, 3, 5, 15, 827, 1759, 2481, 4135, 5277, 8795, 12405, 26385, 1454693, 4364079, 7273465, 21820395]

約数ペア:

[(1, 21820395), (3, 7273465), (5, 4364079), (15, 1454693), (827, 26385), (1759, 12405), (2481, 8795), (4135, 5277)]