156978920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{560639}}^1$

素因数の和:560657

約数の個数: 32

約数和(自身を含む): 403660800

約数和(自身を除く): 246681880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 560639, 1121278, 2242556, 2803195, 3924473, 4485112, 5606390, 7848946, 11212780, 15697892, 19622365, 22425560, 31395784, 39244730, 78489460, 156978920]

約数ペア:

[(1, 156978920), (2, 78489460), (4, 39244730), (5, 31395784), (7, 22425560), (8, 19622365), (10, 15697892), (14, 11212780), (20, 7848946), (28, 5606390), (35, 4485112), (40, 3924473), (56, 2803195), (70, 2242556), (140, 1121278), (280, 560639)]