20187760

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{911}}^1$

素因数の和:1201

約数の個数: 40

約数和(自身を含む): 47157696

約数和(自身を除く): 26969936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 911, 1108, 1385, 1822, 2216, 2770, 3644, 4432, 4555, 5540, 7288, 9110, 11080, 14576, 18220, 22160, 36440, 72880, 252347, 504694, 1009388, 1261735, 2018776, 2523470, 4037552, 5046940, 10093880, 20187760]

約数ペア:

[(1, 20187760), (2, 10093880), (4, 5046940), (5, 4037552), (8, 2523470), (10, 2018776), (16, 1261735), (20, 1009388), (40, 504694), (80, 252347), (277, 72880), (554, 36440), (911, 22160), (1108, 18220), (1385, 14576), (1822, 11080), (2216, 9110), (2770, 7288), (3644, 5540), (4432, 4555)]