66897320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{238919}}^1$

素因数の和:238937

約数の個数: 32

約数和(自身を含む): 172022400

約数和(自身を除く): 105125080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 238919, 477838, 955676, 1194595, 1672433, 1911352, 2389190, 3344866, 4778380, 6689732, 8362165, 9556760, 13379464, 16724330, 33448660, 66897320]

約数ペア:

[(1, 66897320), (2, 33448660), (4, 16724330), (5, 13379464), (7, 9556760), (8, 8362165), (10, 6689732), (14, 4778380), (20, 3344866), (28, 2389190), (35, 1911352), (40, 1672433), (56, 1194595), (70, 955676), (140, 477838), (280, 238919)]