12345680

素因数分解:

$2^4\times 5^1\times {\mathrm{154321}}^1$

素因数の和:154334

約数の個数: 20

約数和(自身を含む): 28703892

約数和(自身を除く): 16358212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 154321, 308642, 617284, 771605, 1234568, 1543210, 2469136, 3086420, 6172840, 12345680]

約数ペア:

[(1, 12345680), (2, 6172840), (4, 3086420), (5, 2469136), (8, 1543210), (10, 1234568), (16, 771605), (20, 617284), (40, 308642), (80, 154321)]