20906289

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:602

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12156111

約数列:

[1, 3, 9, 19, 27, 57, 83, 171, 249, 491, 513, 747, 1473, 1577, 2241, 4419, 4731, 9329, 13257, 14193, 27987, 40753, 42579, 83961, 122259, 251883, 366777, 774307, 1100331, 2322921, 6968763, 20906289]

約数ペア:

[(1, 20906289), (3, 6968763), (9, 2322921), (19, 1100331), (27, 774307), (57, 366777), (83, 251883), (171, 122259), (249, 83961), (491, 42579), (513, 40753), (747, 27987), (1473, 14193), (1577, 13257), (2241, 9329), (4419, 4731)]