138267640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{493813}}^1$

素因数の和:493831

約数の個数: 32

約数和(自身を含む): 355546080

約数和(自身を除く): 217278440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 493813, 987626, 1975252, 2469065, 3456691, 3950504, 4938130, 6913382, 9876260, 13826764, 17283455, 19752520, 27653528, 34566910, 69133820, 138267640]

約数ペア:

[(1, 138267640), (2, 69133820), (4, 34566910), (5, 27653528), (7, 19752520), (8, 17283455), (10, 13826764), (14, 9876260), (20, 6913382), (28, 4938130), (35, 3950504), (40, 3456691), (56, 2469065), (70, 1975252), (140, 987626), (280, 493813)]