12980840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7547}}^1$

素因数の和:7601

約数の個数: 32

約数和(自身を含む): 29890080

約数和(自身を除く): 16909240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7547, 15094, 30188, 37735, 60376, 75470, 150940, 301880, 324521, 649042, 1298084, 1622605, 2596168, 3245210, 6490420, 12980840]

約数ペア:

[(1, 12980840), (2, 6490420), (4, 3245210), (5, 2596168), (8, 1622605), (10, 1298084), (20, 649042), (40, 324521), (43, 301880), (86, 150940), (172, 75470), (215, 60376), (344, 37735), (430, 30188), (860, 15094), (1720, 7547)]