130458520

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{12401}}^1$

素因数の和:12675

約数の個数: 32

約数和(自身を含む): 294671520

約数和(自身を除く): 164213000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 12401, 24802, 49604, 62005, 99208, 124010, 248020, 496040, 3261463, 6522926, 13045852, 16307315, 26091704, 32614630, 65229260, 130458520]

約数ペア:

[(1, 130458520), (2, 65229260), (4, 32614630), (5, 26091704), (8, 16307315), (10, 13045852), (20, 6522926), (40, 3261463), (263, 496040), (526, 248020), (1052, 124010), (1315, 99208), (2104, 62005), (2630, 49604), (5260, 24802), (10520, 12401)]