20696560

素因数分解:

$2^4\times 5^1\times {\mathrm{258707}}^1$

素因数の和:258720

約数の個数: 20

約数和(自身を含む): 48119688

約数和(自身を除く): 27423128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 258707, 517414, 1034828, 1293535, 2069656, 2587070, 4139312, 5174140, 10348280, 20696560]

約数ペア:

[(1, 20696560), (2, 10348280), (4, 5174140), (5, 4139312), (8, 2587070), (10, 2069656), (16, 1293535), (20, 1034828), (40, 517414), (80, 258707)]