20804915887

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1487}}^1\times {\mathrm{1783}}^1$

素因数の和:3355

約数の個数: 32

約数和(自身を含む): 25484083200

約数和(自身を除く): 4679167313

約数列:

[1, 7, 19, 59, 133, 413, 1121, 1487, 1783, 7847, 10409, 12481, 28253, 33877, 87733, 105197, 197771, 237139, 614131, 736379, 1666927, 1998743, 2651321, 11668489, 13991201, 18559247, 50375099, 156427939, 352625693, 1094995573, 2972130841, 20804915887]

約数ペア:

[(1, 20804915887), (7, 2972130841), (19, 1094995573), (59, 352625693), (133, 156427939), (413, 50375099), (1121, 18559247), (1487, 13991201), (1783, 11668489), (7847, 2651321), (10409, 1998743), (12481, 1666927), (28253, 736379), (33877, 614131), (87733, 237139), (105197, 197771)]