18728920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{66889}}^1$

素因数の和:66907

約数の個数: 32

約数和(自身を含む): 48160800

約数和(自身を除く): 29431880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 66889, 133778, 267556, 334445, 468223, 535112, 668890, 936446, 1337780, 1872892, 2341115, 2675560, 3745784, 4682230, 9364460, 18728920]

約数ペア:

[(1, 18728920), (2, 9364460), (4, 4682230), (5, 3745784), (7, 2675560), (8, 2341115), (10, 1872892), (14, 1337780), (20, 936446), (28, 668890), (35, 535112), (40, 468223), (56, 334445), (70, 267556), (140, 133778), (280, 66889)]