21000359618

素因数分解:

$2^1\times 7^1\times {\mathrm{2309}}^1\times {\mathrm{649643}}^1$

素因数の和:651961

約数の個数: 16

約数和(自身を含む): 36016263360

約数和(自身を除く): 15015903742

約数列:

[1, 2, 7, 14, 2309, 4618, 16163, 32326, 649643, 1299286, 4547501, 9095002, 1500025687, 3000051374, 10500179809, 21000359618]

約数ペア:

[(1, 21000359618), (2, 10500179809), (7, 3000051374), (14, 1500025687), (2309, 9095002), (4618, 4547501), (16163, 1299286), (32326, 649643)]