21751713

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:526

約数の個数: 32

約数和(自身を含む): 34320000

約数和(自身を除く): 12568287

約数列:

[1, 3, 9, 19, 27, 57, 109, 171, 327, 389, 513, 981, 1167, 2071, 2943, 3501, 6213, 7391, 10503, 18639, 22173, 42401, 55917, 66519, 127203, 199557, 381609, 805619, 1144827, 2416857, 7250571, 21751713]

約数ペア:

[(1, 21751713), (3, 7250571), (9, 2416857), (19, 1144827), (27, 805619), (57, 381609), (109, 199557), (171, 127203), (327, 66519), (389, 55917), (513, 42401), (981, 22173), (1167, 18639), (2071, 10503), (2943, 7391), (3501, 6213)]