20421562

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{63421}}^1$

素因数の和:63453

約数の個数: 16

約数和(自身を含む): 36531072

約数和(自身を除く): 16109510

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 63421, 126842, 443947, 887894, 1458683, 2917366, 10210781, 20421562]

約数ペア:

[(1, 20421562), (2, 10210781), (7, 2917366), (14, 1458683), (23, 887894), (46, 443947), (161, 126842), (322, 63421)]