209540415

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:461

約数の個数: 64

約数和(自身を含む): 395136000

約数和(自身を除く): 185595585

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 139, 147, 245, 293, 343, 417, 695, 735, 879, 973, 1029, 1465, 1715, 2051, 2085, 2919, 4395, 4865, 5145, 6153, 6811, 10255, 14357, 14595, 20433, 30765, 34055, 40727, 43071, 47677, 71785, 100499, 102165, 122181, 143031, 203635, 215355, 238385, 285089, 301497, 502495, 610905, 715155, 855267, 1425445, 1507485, 1995623, 4276335, 5986869, 9978115, 13969361, 29934345, 41908083, 69846805, 209540415]

約数ペア:

[(1, 209540415), (3, 69846805), (5, 41908083), (7, 29934345), (15, 13969361), (21, 9978115), (35, 5986869), (49, 4276335), (105, 1995623), (139, 1507485), (147, 1425445), (245, 855267), (293, 715155), (343, 610905), (417, 502495), (695, 301497), (735, 285089), (879, 238385), (973, 215355), (1029, 203635), (1465, 143031), (1715, 122181), (2051, 102165), (2085, 100499), (2919, 71785), (4395, 47677), (4865, 43071), (5145, 40727), (6153, 34055), (6811, 30765), (10255, 20433), (14357, 14595)]