20878317

素因数分解:

$3^5\times {\mathrm{151}}^1\times {\mathrm{569}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 31536960

約数和(自身を除く): 10658643

約数列:

[1, 3, 9, 27, 81, 151, 243, 453, 569, 1359, 1707, 4077, 5121, 12231, 15363, 36693, 46089, 85919, 138267, 257757, 773271, 2319813, 6959439, 20878317]

約数ペア:

[(1, 20878317), (3, 6959439), (9, 2319813), (27, 773271), (81, 257757), (151, 138267), (243, 85919), (453, 46089), (569, 36693), (1359, 15363), (1707, 12231), (4077, 5121)]