19955481

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1091}}^1$

素因数の和:1181

約数の個数: 32

約数和(自身を含む): 33266688

約数和(自身を除く): 13311207

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 201, 273, 469, 871, 1091, 1407, 2613, 3273, 6097, 7637, 14183, 18291, 22911, 42549, 73097, 99281, 219291, 297843, 511679, 950261, 1535037, 2850783, 6651827, 19955481]

約数ペア:

[(1, 19955481), (3, 6651827), (7, 2850783), (13, 1535037), (21, 950261), (39, 511679), (67, 297843), (91, 219291), (201, 99281), (273, 73097), (469, 42549), (871, 22911), (1091, 18291), (1407, 14183), (2613, 7637), (3273, 6097)]