81707290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{683}}^1\times {\mathrm{1709}}^1$

素因数の和:2406

約数の個数: 32

約数和(自身を含む): 168428160

約数和(自身を除く): 86720870

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 683, 1366, 1709, 3415, 3418, 4781, 6830, 8545, 9562, 11963, 17090, 23905, 23926, 47810, 59815, 119630, 1167247, 2334494, 5836235, 8170729, 11672470, 16341458, 40853645, 81707290]

約数ペア:

[(1, 81707290), (2, 40853645), (5, 16341458), (7, 11672470), (10, 8170729), (14, 5836235), (35, 2334494), (70, 1167247), (683, 119630), (1366, 59815), (1709, 47810), (3415, 23926), (3418, 23905), (4781, 17090), (6830, 11963), (8545, 9562)]