12855560

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{577}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 29027160

約数和(自身を除く): 16171600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 577, 1114, 1154, 2228, 2308, 2785, 2885, 4456, 4616, 5570, 5770, 11140, 11540, 22280, 23080, 321389, 642778, 1285556, 1606945, 2571112, 3213890, 6427780, 12855560]

約数ペア:

[(1, 12855560), (2, 6427780), (4, 3213890), (5, 2571112), (8, 1606945), (10, 1285556), (20, 642778), (40, 321389), (557, 23080), (577, 22280), (1114, 11540), (1154, 11140), (2228, 5770), (2308, 5570), (2785, 4616), (2885, 4456)]