12721240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{45433}}^1$

素因数の和:45451

約数の個数: 32

約数和(自身を含む): 32712480

約数和(自身を除く): 19991240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 45433, 90866, 181732, 227165, 318031, 363464, 454330, 636062, 908660, 1272124, 1590155, 1817320, 2544248, 3180310, 6360620, 12721240]

約数ペア:

[(1, 12721240), (2, 6360620), (4, 3180310), (5, 2544248), (7, 1817320), (8, 1590155), (10, 1272124), (14, 908660), (20, 636062), (28, 454330), (35, 363464), (40, 318031), (56, 227165), (70, 181732), (140, 90866), (280, 45433)]