20921595

素因数分解:

$3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3313}}^1$

素因数の和:3742

約数の個数: 16

約数和(自身を含む): 33564192

約数和(自身を除く): 12642597

約数列:

[1, 3, 5, 15, 421, 1263, 2105, 3313, 6315, 9939, 16565, 49695, 1394773, 4184319, 6973865, 20921595]

約数ペア:

[(1, 20921595), (3, 6973865), (5, 4184319), (15, 1394773), (421, 49695), (1263, 16565), (2105, 9939), (3313, 6315)]