639620786

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1\times {\mathrm{1291}}^1$

素因数の和:2166

約数の個数: 32

約数和(自身を含む): 1124226048

約数和(自身を除く): 484605262

約数列:

[1, 2, 7, 14, 43, 86, 301, 602, 823, 1291, 1646, 2582, 5761, 9037, 11522, 18074, 35389, 55513, 70778, 111026, 247723, 388591, 495446, 777182, 1062493, 2124986, 7437451, 14874902, 45687199, 91374398, 319810393, 639620786]

約数ペア:

[(1, 639620786), (2, 319810393), (7, 91374398), (14, 45687199), (43, 14874902), (86, 7437451), (301, 2124986), (602, 1062493), (823, 777182), (1291, 495446), (1646, 388591), (2582, 247723), (5761, 111026), (9037, 70778), (11522, 55513), (18074, 35389)]