20880440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74573}}^1$

素因数の和:74591

約数の個数: 32

約数和(自身を含む): 53693280

約数和(自身を除く): 32812840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74573, 149146, 298292, 372865, 522011, 596584, 745730, 1044022, 1491460, 2088044, 2610055, 2982920, 4176088, 5220110, 10440220, 20880440]

約数ペア:

[(1, 20880440), (2, 10440220), (4, 5220110), (5, 4176088), (7, 2982920), (8, 2610055), (10, 2088044), (14, 1491460), (20, 1044022), (28, 745730), (35, 596584), (40, 522011), (56, 372865), (70, 298292), (140, 149146), (280, 74573)]