20965280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18719}}^1$

素因数の和:18741

約数の個数: 48

約数和(自身を含む): 56609280

約数和(自身を除く): 35644000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18719, 37438, 74876, 93595, 131033, 149752, 187190, 262066, 299504, 374380, 524132, 599008, 655165, 748760, 1048264, 1310330, 1497520, 2096528, 2620660, 2995040, 4193056, 5241320, 10482640, 20965280]

約数ペア:

[(1, 20965280), (2, 10482640), (4, 5241320), (5, 4193056), (7, 2995040), (8, 2620660), (10, 2096528), (14, 1497520), (16, 1310330), (20, 1048264), (28, 748760), (32, 655165), (35, 599008), (40, 524132), (56, 374380), (70, 299504), (80, 262066), (112, 187190), (140, 149752), (160, 131033), (224, 93595), (280, 74876), (560, 37438), (1120, 18719)]