20199290991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1\times {\mathrm{18181}}^1$

素因数の和:18583

約数の個数: 32

約数和(自身を含む): 29721897216

約数和(自身を除く): 9522606225

約数列:

[1, 3, 11, 33, 131, 257, 393, 771, 1441, 2827, 4323, 8481, 18181, 33667, 54543, 101001, 199991, 370337, 599973, 1111011, 2381711, 4672517, 7145133, 14017551, 26198821, 51397687, 78596463, 154193061, 612099727, 1836299181, 6733096997, 20199290991]

約数ペア:

[(1, 20199290991), (3, 6733096997), (11, 1836299181), (33, 612099727), (131, 154193061), (257, 78596463), (393, 51397687), (771, 26198821), (1441, 14017551), (2827, 7145133), (4323, 4672517), (8481, 2381711), (18181, 1111011), (33667, 599973), (54543, 370337), (101001, 199991)]