18915680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{16889}}^1$

素因数の和:16911

約数の個数: 48

約数和(自身を含む): 51075360

約数和(自身を除く): 32159680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 16889, 33778, 67556, 84445, 118223, 135112, 168890, 236446, 270224, 337780, 472892, 540448, 591115, 675560, 945784, 1182230, 1351120, 1891568, 2364460, 2702240, 3783136, 4728920, 9457840, 18915680]

約数ペア:

[(1, 18915680), (2, 9457840), (4, 4728920), (5, 3783136), (7, 2702240), (8, 2364460), (10, 1891568), (14, 1351120), (16, 1182230), (20, 945784), (28, 675560), (32, 591115), (35, 540448), (40, 472892), (56, 337780), (70, 270224), (80, 236446), (112, 168890), (140, 135112), (160, 118223), (224, 84445), (280, 67556), (560, 33778), (1120, 16889)]