1990331663789

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{109}}^1\times {\mathrm{263}}^1\times {\mathrm{10321}}^1$

素因数の和:10762

約数の個数: 48

約数和(自身を含む): 2381220990720

約数和(自身を除く): 390889326931

約数列:

[1, 7, 31, 109, 217, 263, 763, 961, 1841, 3379, 6727, 8153, 10321, 23653, 28667, 57071, 72247, 104749, 200669, 252743, 319951, 733243, 888677, 1124989, 1769201, 2239657, 2714423, 6220739, 7874923, 9918481, 19000961, 27548987, 34874659, 69429367, 84147113, 192842909, 244122613, 295872107, 589029791, 1081114429, 2071104749, 2608560503, 7567801003, 9172035317, 18259923521, 64204247219, 284333094827, 1990331663789]

約数ペア:

[(1, 1990331663789), (7, 284333094827), (31, 64204247219), (109, 18259923521), (217, 9172035317), (263, 7567801003), (763, 2608560503), (961, 2071104749), (1841, 1081114429), (3379, 589029791), (6727, 295872107), (8153, 244122613), (10321, 192842909), (23653, 84147113), (28667, 69429367), (57071, 34874659), (72247, 27548987), (104749, 19000961), (200669, 9918481), (252743, 7874923), (319951, 6220739), (733243, 2714423), (888677, 2239657), (1124989, 1769201)]