638961076

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{37123}}^1$

素因数の和:37471

約数の個数: 24

約数和(自身を含む): 1207866464

約数和(自身を除く): 568905388

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1324, 4303, 8606, 17212, 37123, 74246, 148492, 482599, 965198, 1930396, 12287713, 24575426, 49150852, 159740269, 319480538, 638961076]

約数ペア:

[(1, 638961076), (2, 319480538), (4, 159740269), (13, 49150852), (26, 24575426), (52, 12287713), (331, 1930396), (662, 965198), (1324, 482599), (4303, 148492), (8606, 74246), (17212, 37123)]