20115721840

素因数分解:

$2^4\times 5^1\times {\mathrm{719}}^1\times {\mathrm{349717}}^1$

素因数の和:350449

約数の個数: 40

約数和(自身を含む): 46834234560

約数和(自身を除く): 26718512720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 719, 1438, 2876, 3595, 5752, 7190, 11504, 14380, 28760, 57520, 349717, 699434, 1398868, 1748585, 2797736, 3497170, 5595472, 6994340, 13988680, 27977360, 251446523, 502893046, 1005786092, 1257232615, 2011572184, 2514465230, 4023144368, 5028930460, 10057860920, 20115721840]

約数ペア:

[(1, 20115721840), (2, 10057860920), (4, 5028930460), (5, 4023144368), (8, 2514465230), (10, 2011572184), (16, 1257232615), (20, 1005786092), (40, 502893046), (80, 251446523), (719, 27977360), (1438, 13988680), (2876, 6994340), (3595, 5595472), (5752, 3497170), (7190, 2797736), (11504, 1748585), (14380, 1398868), (28760, 699434), (57520, 349717)]