209990680

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{48163}}^1$

素因数の和:48283

約数の個数: 32

約数和(自身を含む): 476823600

約数和(自身を除く): 266832920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 48163, 96326, 192652, 240815, 385304, 481630, 963260, 1926520, 5249767, 10499534, 20999068, 26248835, 41998136, 52497670, 104995340, 209990680]

約数ペア:

[(1, 209990680), (2, 104995340), (4, 52497670), (5, 41998136), (8, 26248835), (10, 20999068), (20, 10499534), (40, 5249767), (109, 1926520), (218, 963260), (436, 481630), (545, 385304), (872, 240815), (1090, 192652), (2180, 96326), (4360, 48163)]