20215051311

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1\times {\mathrm{3989}}^1$

素因数の和:5008

約数の個数: 64

約数和(自身を含む): 34963891200

約数和(自身を除く): 14748839889

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 977, 1729, 2931, 3989, 5187, 6839, 11967, 12701, 18563, 20517, 27923, 38103, 51857, 55689, 75791, 83769, 88907, 129941, 155571, 227373, 241319, 266721, 362999, 389823, 530537, 723957, 985283, 1088997, 1591611, 1689233, 2955849, 3897253, 5067699, 6896981, 11691759, 20690943, 27280771, 50664289, 74047807, 81842313, 151992867, 222143421, 354650023, 518334649, 962621491, 1063950069, 1555003947, 2887864473, 6738350437, 20215051311]

約数ペア:

[(1, 20215051311), (3, 6738350437), (7, 2887864473), (13, 1555003947), (19, 1063950069), (21, 962621491), (39, 518334649), (57, 354650023), (91, 222143421), (133, 151992867), (247, 81842313), (273, 74047807), (399, 50664289), (741, 27280771), (977, 20690943), (1729, 11691759), (2931, 6896981), (3989, 5067699), (5187, 3897253), (6839, 2955849), (11967, 1689233), (12701, 1591611), (18563, 1088997), (20517, 985283), (27923, 723957), (38103, 530537), (51857, 389823), (55689, 362999), (75791, 266721), (83769, 241319), (88907, 227373), (129941, 155571)]