20895760

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1753}}^1$

素因数の和:1915

約数の個数: 40

約数和(自身を含む): 48936600

約数和(自身を除く): 28040840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1753, 2384, 2980, 3506, 5960, 7012, 8765, 11920, 14024, 17530, 28048, 35060, 70120, 140240, 261197, 522394, 1044788, 1305985, 2089576, 2611970, 4179152, 5223940, 10447880, 20895760]

約数ペア:

[(1, 20895760), (2, 10447880), (4, 5223940), (5, 4179152), (8, 2611970), (10, 2089576), (16, 1305985), (20, 1044788), (40, 522394), (80, 261197), (149, 140240), (298, 70120), (596, 35060), (745, 28048), (1192, 17530), (1490, 14024), (1753, 11920), (2384, 8765), (2980, 7012), (3506, 5960)]