21702920

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2017}}^1$

素因数の和:2297

約数の個数: 32

約数和(自身を含む): 49037400

約数和(自身を除く): 27334480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2017, 2152, 2690, 4034, 5380, 8068, 10085, 10760, 16136, 20170, 40340, 80680, 542573, 1085146, 2170292, 2712865, 4340584, 5425730, 10851460, 21702920]

約数ペア:

[(1, 21702920), (2, 10851460), (4, 5425730), (5, 4340584), (8, 2712865), (10, 2170292), (20, 1085146), (40, 542573), (269, 80680), (538, 40340), (1076, 20170), (1345, 16136), (2017, 10760), (2152, 10085), (2690, 8068), (4034, 5380)]