20178032840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72064403}}^1$

素因数の和:72064421

約数の個数: 32

約数和(自身を含む): 51886370880

約数和(自身を除く): 31708338040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72064403, 144128806, 288257612, 360322015, 504450821, 576515224, 720644030, 1008901642, 1441288060, 2017803284, 2522254105, 2882576120, 4035606568, 5044508210, 10089016420, 20178032840]

約数ペア:

[(1, 20178032840), (2, 10089016420), (4, 5044508210), (5, 4035606568), (7, 2882576120), (8, 2522254105), (10, 2017803284), (14, 1441288060), (20, 1008901642), (28, 720644030), (35, 576515224), (40, 504450821), (56, 360322015), (70, 288257612), (140, 144128806), (280, 72064403)]