20642778

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4643}}^1$

素因数の和:4683

約数の個数: 48

約数和(自身を含む): 50712480

約数和(自身を除く): 30069702

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 171, 234, 247, 342, 494, 741, 1482, 2223, 4446, 4643, 9286, 13929, 27858, 41787, 60359, 83574, 88217, 120718, 176434, 181077, 264651, 362154, 529302, 543231, 793953, 1086462, 1146821, 1587906, 2293642, 3440463, 6880926, 10321389, 20642778]

約数ペア:

[(1, 20642778), (2, 10321389), (3, 6880926), (6, 3440463), (9, 2293642), (13, 1587906), (18, 1146821), (19, 1086462), (26, 793953), (38, 543231), (39, 529302), (57, 362154), (78, 264651), (114, 181077), (117, 176434), (171, 120718), (234, 88217), (247, 83574), (342, 60359), (494, 41787), (741, 27858), (1482, 13929), (2223, 9286), (4446, 4643)]