20921633404

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1321}}^1\times {\mathrm{9587}}^1$

素因数の和:10978

約数の個数: 48

約数和(自身を含む): 42589128960

約数和(自身を除く): 21667495556

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1321, 1652, 2642, 5284, 9247, 9587, 18494, 19174, 36988, 38348, 67109, 77939, 134218, 155878, 268436, 311756, 545573, 565633, 1091146, 1131266, 2182292, 2262532, 3959431, 7918862, 12664427, 15837724, 25328854, 50657708, 88650989, 177301978, 354603956, 747201193, 1494402386, 2988804772, 5230408351, 10460816702, 20921633404]

約数ペア:

[(1, 20921633404), (2, 10460816702), (4, 5230408351), (7, 2988804772), (14, 1494402386), (28, 747201193), (59, 354603956), (118, 177301978), (236, 88650989), (413, 50657708), (826, 25328854), (1321, 15837724), (1652, 12664427), (2642, 7918862), (5284, 3959431), (9247, 2262532), (9587, 2182292), (18494, 1131266), (19174, 1091146), (36988, 565633), (38348, 545573), (67109, 311756), (77939, 268436), (134218, 155878)]