21962920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78439}}^1$

素因数の和:78457

約数の個数: 32

約数和(自身を含む): 56476800

約数和(自身を除く): 34513880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78439, 156878, 313756, 392195, 549073, 627512, 784390, 1098146, 1568780, 2196292, 2745365, 3137560, 4392584, 5490730, 10981460, 21962920]

約数ペア:

[(1, 21962920), (2, 10981460), (4, 5490730), (5, 4392584), (7, 3137560), (8, 2745365), (10, 2196292), (14, 1568780), (20, 1098146), (28, 784390), (35, 627512), (40, 549073), (56, 392195), (70, 313756), (140, 156878), (280, 78439)]