20645281544

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{655489}}^1$

素因数の和:655653

約数の個数: 32

約数和(自身を含む): 40273305600

約数和(自身を除く): 19628024056

約数列:

[1, 2, 4, 8, 31, 62, 124, 127, 248, 254, 508, 1016, 3937, 7874, 15748, 31496, 655489, 1310978, 2621956, 5243912, 20320159, 40640318, 81280636, 83247103, 162561272, 166494206, 332988412, 665976824, 2580660193, 5161320386, 10322640772, 20645281544]

約数ペア:

[(1, 20645281544), (2, 10322640772), (4, 5161320386), (8, 2580660193), (31, 665976824), (62, 332988412), (124, 166494206), (127, 162561272), (248, 83247103), (254, 81280636), (508, 40640318), (1016, 20320159), (3937, 5243912), (7874, 2621956), (15748, 1310978), (31496, 655489)]