28920920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103289}}^1$

素因数の和:103307

約数の個数: 32

約数和(自身を含む): 74368800

約数和(自身を除く): 45447880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 103289, 206578, 413156, 516445, 723023, 826312, 1032890, 1446046, 2065780, 2892092, 3615115, 4131560, 5784184, 7230230, 14460460, 28920920]

約数ペア:

[(1, 28920920), (2, 14460460), (4, 7230230), (5, 5784184), (7, 4131560), (8, 3615115), (10, 2892092), (14, 2065780), (20, 1446046), (28, 1032890), (35, 826312), (40, 723023), (56, 516445), (70, 413156), (140, 206578), (280, 103289)]