19723280

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2441}}^1$

素因数の和:2555

約数の個数: 40

約数和(自身を含む): 46329624

約数和(自身を除く): 26606344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2441, 4040, 4882, 8080, 9764, 12205, 19528, 24410, 39056, 48820, 97640, 195280, 246541, 493082, 986164, 1232705, 1972328, 2465410, 3944656, 4930820, 9861640, 19723280]

約数ペア:

[(1, 19723280), (2, 9861640), (4, 4930820), (5, 3944656), (8, 2465410), (10, 1972328), (16, 1232705), (20, 986164), (40, 493082), (80, 246541), (101, 195280), (202, 97640), (404, 48820), (505, 39056), (808, 24410), (1010, 19528), (1616, 12205), (2020, 9764), (2441, 8080), (4040, 4882)]