21038295

素因数分解:

$3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{4481}}^1$

素因数の和:4802

約数の個数: 16

約数和(自身を含む): 33776352

約数和(自身を除く): 12738057

約数列:

[1, 3, 5, 15, 313, 939, 1565, 4481, 4695, 13443, 22405, 67215, 1402553, 4207659, 7012765, 21038295]

約数ペア:

[(1, 21038295), (3, 7012765), (5, 4207659), (15, 1402553), (313, 67215), (939, 22405), (1565, 13443), (4481, 4695)]