21501699

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{1997}}^1$

素因数の和:2134

約数の個数: 16

約数和(自身を含む): 29762208

約数和(自身を除く): 8260509

約数列:

[1, 3, 37, 97, 111, 291, 1997, 3589, 5991, 10767, 73889, 193709, 221667, 581127, 7167233, 21501699]

約数ペア:

[(1, 21501699), (3, 7167233), (37, 581127), (97, 221667), (111, 193709), (291, 73889), (1997, 10767), (3589, 5991)]