12866808520

素因数分解:

$2^3\times 5^1\times {\mathrm{321670213}}^1$

素因数の和:321670224

約数の個数: 16

約数和(自身を含む): 28950319260

約数和(自身を除く): 16083510740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 321670213, 643340426, 1286680852, 1608351065, 2573361704, 3216702130, 6433404260, 12866808520]

約数ペア:

[(1, 12866808520), (2, 6433404260), (4, 3216702130), (5, 2573361704), (8, 1608351065), (10, 1286680852), (20, 643340426), (40, 321670213)]