20993706

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16427}}^1$

素因数の和:16506

約数の個数: 24

約数和(自身を含む): 46129824

約数和(自身を除く): 25136118

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16427, 32854, 49281, 98562, 147843, 295686, 1166317, 2332634, 3498951, 6997902, 10496853, 20993706]

約数ペア:

[(1, 20993706), (2, 10496853), (3, 6997902), (6, 3498951), (9, 2332634), (18, 1166317), (71, 295686), (142, 147843), (213, 98562), (426, 49281), (639, 32854), (1278, 16427)]