20804948920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74303389}}^1$

素因数の和:74303407

約数の個数: 32

約数和(自身を含む): 53498440800

約数和(自身を除く): 32693491880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74303389, 148606778, 297213556, 371516945, 520123723, 594427112, 743033890, 1040247446, 1486067780, 2080494892, 2600618615, 2972135560, 4160989784, 5201237230, 10402474460, 20804948920]

約数ペア:

[(1, 20804948920), (2, 10402474460), (4, 5201237230), (5, 4160989784), (7, 2972135560), (8, 2600618615), (10, 2080494892), (14, 1486067780), (20, 1040247446), (28, 743033890), (35, 594427112), (40, 520123723), (56, 371516945), (70, 297213556), (140, 148606778), (280, 74303389)]