21154938

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{4621}}^1$

素因数の和:4742

約数の個数: 32

約数和(自身を含む): 48808320

約数和(自身を除く): 27653382

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 109, 218, 327, 654, 763, 1526, 2289, 4578, 4621, 9242, 13863, 27726, 32347, 64694, 97041, 194082, 503689, 1007378, 1511067, 3022134, 3525823, 7051646, 10577469, 21154938]

約数ペア:

[(1, 21154938), (2, 10577469), (3, 7051646), (6, 3525823), (7, 3022134), (14, 1511067), (21, 1007378), (42, 503689), (109, 194082), (218, 97041), (327, 64694), (654, 32347), (763, 27726), (1526, 13863), (2289, 9242), (4578, 4621)]