19428920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{69389}}^1$

素因数の和:69407

約数の個数: 32

約数和(自身を含む): 49960800

約数和(自身を除く): 30531880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 69389, 138778, 277556, 346945, 485723, 555112, 693890, 971446, 1387780, 1942892, 2428615, 2775560, 3885784, 4857230, 9714460, 19428920]

約数ペア:

[(1, 19428920), (2, 9714460), (4, 4857230), (5, 3885784), (7, 2775560), (8, 2428615), (10, 1942892), (14, 1387780), (20, 971446), (28, 693890), (35, 555112), (40, 485723), (56, 346945), (70, 277556), (140, 138778), (280, 69389)]