193865721

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{3709}}^1$

素因数の和:3869

約数の個数: 32

約数和(自身を含む): 313420800

約数和(自身を除く): 119555079

約数列:

[1, 3, 7, 19, 21, 57, 131, 133, 393, 399, 917, 2489, 2751, 3709, 7467, 11127, 17423, 25963, 52269, 70471, 77889, 211413, 485879, 493297, 1457637, 1479891, 3401153, 9231701, 10203459, 27695103, 64621907, 193865721]

約数ペア:

[(1, 193865721), (3, 64621907), (7, 27695103), (19, 10203459), (21, 9231701), (57, 3401153), (131, 1479891), (133, 1457637), (393, 493297), (399, 485879), (917, 211413), (2489, 77889), (2751, 70471), (3709, 52269), (7467, 25963), (11127, 17423)]