20671218

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1571}}^1$

素因数の和:1639

約数の個数: 48

約数和(自身を含む): 48555936

約数和(自身を除く): 27884718

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 43, 51, 86, 102, 129, 153, 258, 306, 387, 731, 774, 1462, 1571, 2193, 3142, 4386, 4713, 6579, 9426, 13158, 14139, 26707, 28278, 53414, 67553, 80121, 135106, 160242, 202659, 240363, 405318, 480726, 607977, 1148401, 1215954, 2296802, 3445203, 6890406, 10335609, 20671218]

約数ペア:

[(1, 20671218), (2, 10335609), (3, 6890406), (6, 3445203), (9, 2296802), (17, 1215954), (18, 1148401), (34, 607977), (43, 480726), (51, 405318), (86, 240363), (102, 202659), (129, 160242), (153, 135106), (258, 80121), (306, 67553), (387, 53414), (731, 28278), (774, 26707), (1462, 14139), (1571, 13158), (2193, 9426), (3142, 6579), (4386, 4713)]