20020840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71503}}^1$

素因数の和:71521

約数の個数: 32

約数和(自身を含む): 51482880

約数和(自身を除く): 31462040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71503, 143006, 286012, 357515, 500521, 572024, 715030, 1001042, 1430060, 2002084, 2502605, 2860120, 4004168, 5005210, 10010420, 20020840]

約数ペア:

[(1, 20020840), (2, 10010420), (4, 5005210), (5, 4004168), (7, 2860120), (8, 2502605), (10, 2002084), (14, 1430060), (20, 1001042), (28, 715030), (35, 572024), (40, 500521), (56, 357515), (70, 286012), (140, 143006), (280, 71503)]