21192920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75689}}^1$

素因数の和:75707

約数の個数: 32

約数和(自身を含む): 54496800

約数和(自身を除く): 33303880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75689, 151378, 302756, 378445, 529823, 605512, 756890, 1059646, 1513780, 2119292, 2649115, 3027560, 4238584, 5298230, 10596460, 21192920]

約数ペア:

[(1, 21192920), (2, 10596460), (4, 5298230), (5, 4238584), (7, 3027560), (8, 2649115), (10, 2119292), (14, 1513780), (20, 1059646), (28, 756890), (35, 605512), (40, 529823), (56, 378445), (70, 302756), (140, 151378), (280, 75689)]