20111481

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 33633600

約数和(自身を除く): 13522119

約数列:

[1, 3, 9, 13, 19, 39, 57, 83, 109, 117, 171, 247, 249, 327, 741, 747, 981, 1079, 1417, 1577, 2071, 2223, 3237, 4251, 4731, 6213, 9047, 9711, 12753, 14193, 18639, 20501, 26923, 27141, 61503, 80769, 81423, 117611, 171893, 184509, 242307, 352833, 515679, 1058499, 1547037, 2234609, 6703827, 20111481]

約数ペア:

[(1, 20111481), (3, 6703827), (9, 2234609), (13, 1547037), (19, 1058499), (39, 515679), (57, 352833), (83, 242307), (109, 184509), (117, 171893), (171, 117611), (247, 81423), (249, 80769), (327, 61503), (741, 27141), (747, 26923), (981, 20501), (1079, 18639), (1417, 14193), (1577, 12753), (2071, 9711), (2223, 9047), (3237, 6213), (4251, 4731)]