640266

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:214

約数の個数: 32

約数和(自身を含む): 1425600

約数和(自身を除く): 785334

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 89, 109, 178, 218, 267, 327, 534, 654, 979, 1199, 1958, 2398, 2937, 3597, 5874, 7194, 9701, 19402, 29103, 58206, 106711, 213422, 320133, 640266]

約数ペア:

[(1, 640266), (2, 320133), (3, 213422), (6, 106711), (11, 58206), (22, 29103), (33, 19402), (66, 9701), (89, 7194), (109, 5874), (178, 3597), (218, 2937), (267, 2398), (327, 1958), (534, 1199), (654, 979)]