21276870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1103}}^1$

素因数の和:1756

約数の個数: 32

約数和(自身を含む): 51190272

約数和(自身を除く): 29913402

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 643, 1103, 1286, 1929, 2206, 3215, 3309, 3858, 5515, 6430, 6618, 9645, 11030, 16545, 19290, 33090, 709229, 1418458, 2127687, 3546145, 4255374, 7092290, 10638435, 21276870]

約数ペア:

[(1, 21276870), (2, 10638435), (3, 7092290), (5, 4255374), (6, 3546145), (10, 2127687), (15, 1418458), (30, 709229), (643, 33090), (1103, 19290), (1286, 16545), (1929, 11030), (2206, 9645), (3215, 6618), (3309, 6430), (3858, 5515)]