201971231

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{443}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 261881856

約数和(自身を除く): 59910625

約数列:

[1, 7, 11, 31, 77, 191, 217, 341, 443, 1337, 2101, 2387, 3101, 4873, 5921, 13733, 14707, 34111, 41447, 65131, 84613, 96131, 151063, 455917, 592291, 930743, 1057441, 2623003, 6515201, 18361021, 28853033, 201971231]

約数ペア:

[(1, 201971231), (7, 28853033), (11, 18361021), (31, 6515201), (77, 2623003), (191, 1057441), (217, 930743), (341, 592291), (443, 455917), (1337, 151063), (2101, 96131), (2387, 84613), (3101, 65131), (4873, 41447), (5921, 34111), (13733, 14707)]