20942793

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:323

約数の個数: 40

約数和(自身を含む): 33767712

約数和(自身を除く): 12824919

約数列:

[1, 3, 9, 17, 27, 51, 67, 81, 153, 201, 227, 459, 603, 681, 1139, 1377, 1809, 2043, 3417, 3859, 5427, 6129, 10251, 11577, 15209, 18387, 30753, 34731, 45627, 92259, 104193, 136881, 258553, 312579, 410643, 775659, 1231929, 2326977, 6980931, 20942793]

約数ペア:

[(1, 20942793), (3, 6980931), (9, 2326977), (17, 1231929), (27, 775659), (51, 410643), (67, 312579), (81, 258553), (153, 136881), (201, 104193), (227, 92259), (459, 45627), (603, 34731), (681, 30753), (1139, 18387), (1377, 15209), (1809, 11577), (2043, 10251), (3417, 6129), (3859, 5427)]