19689505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{1321}}^1$

素因数の和:1608

約数の個数: 16

約数和(自身を含む): 25890048

約数和(自身を除く): 6200543

約数列:

[1, 5, 11, 55, 271, 1321, 1355, 2981, 6605, 14531, 14905, 72655, 357991, 1789955, 3937901, 19689505]

約数ペア:

[(1, 19689505), (5, 3937901), (11, 1789955), (55, 357991), (271, 72655), (1321, 14905), (1355, 14531), (2981, 6605)]