21390246

素因数分解:

$2^1\times 3^2\times {\mathrm{97}}^1\times {\mathrm{12251}}^1$

素因数の和:12356

約数の個数: 24

約数和(自身を含む): 46827144

約数和(自身を除く): 25436898

約数列:

[1, 2, 3, 6, 9, 18, 97, 194, 291, 582, 873, 1746, 12251, 24502, 36753, 73506, 110259, 220518, 1188347, 2376694, 3565041, 7130082, 10695123, 21390246]

約数ペア:

[(1, 21390246), (2, 10695123), (3, 7130082), (6, 3565041), (9, 2376694), (18, 1188347), (97, 220518), (194, 110259), (291, 73506), (582, 36753), (873, 24502), (1746, 12251)]