20829393

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:307

約数の個数: 40

約数和(自身を含む): 33988416

約数和(自身を除く): 13159023

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 131, 151, 351, 393, 453, 1053, 1179, 1359, 1703, 1963, 3537, 4077, 5109, 5889, 10611, 12231, 15327, 17667, 19781, 45981, 53001, 59343, 137943, 159003, 178029, 257153, 534087, 771459, 1602261, 2314377, 6943131, 20829393]

約数ペア:

[(1, 20829393), (3, 6943131), (9, 2314377), (13, 1602261), (27, 771459), (39, 534087), (81, 257153), (117, 178029), (131, 159003), (151, 137943), (351, 59343), (393, 53001), (453, 45981), (1053, 19781), (1179, 17667), (1359, 15327), (1703, 12231), (1963, 10611), (3537, 5889), (4077, 5109)]