21390537

素因数分解:

$3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{10501}}^1$

素因数の和:10608

約数の個数: 16

約数和(自身を含む): 32934272

約数和(自身を除く): 11543735

約数列:

[1, 3, 7, 21, 97, 291, 679, 2037, 10501, 31503, 73507, 220521, 1018597, 3055791, 7130179, 21390537]

約数ペア:

[(1, 21390537), (3, 7130179), (7, 3055791), (21, 1018597), (97, 220521), (291, 73507), (679, 31503), (2037, 10501)]