20051320

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3659}}^1$

素因数の和:3807

約数の個数: 32

約数和(自身を含む): 45457200

約数和(自身を除く): 25405880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3659, 5480, 7318, 14636, 18295, 29272, 36590, 73180, 146360, 501283, 1002566, 2005132, 2506415, 4010264, 5012830, 10025660, 20051320]

約数ペア:

[(1, 20051320), (2, 10025660), (4, 5012830), (5, 4010264), (8, 2506415), (10, 2005132), (20, 1002566), (40, 501283), (137, 146360), (274, 73180), (548, 36590), (685, 29272), (1096, 18295), (1370, 14636), (2740, 7318), (3659, 5480)]