199438520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{216781}}^1$

素因数の和:216815

約数の個数: 32

約数和(自身を含む): 468249120

約数和(自身を除く): 268810600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 216781, 433562, 867124, 1083905, 1734248, 2167810, 4335620, 4985963, 8671240, 9971926, 19943852, 24929815, 39887704, 49859630, 99719260, 199438520]

約数ペア:

[(1, 199438520), (2, 99719260), (4, 49859630), (5, 39887704), (8, 24929815), (10, 19943852), (20, 9971926), (23, 8671240), (40, 4985963), (46, 4335620), (92, 2167810), (115, 1734248), (184, 1083905), (230, 867124), (460, 433562), (920, 216781)]