219384280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127549}}^1$

素因数の和:127603

約数の個数: 32

約数和(自身を含む): 505098000

約数和(自身を除く): 285713720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 127549, 255098, 510196, 637745, 1020392, 1275490, 2550980, 5101960, 5484607, 10969214, 21938428, 27423035, 43876856, 54846070, 109692140, 219384280]

約数ペア:

[(1, 219384280), (2, 109692140), (4, 54846070), (5, 43876856), (8, 27423035), (10, 21938428), (20, 10969214), (40, 5484607), (43, 5101960), (86, 2550980), (172, 1275490), (215, 1020392), (344, 637745), (430, 510196), (860, 255098), (1720, 127549)]