20737480

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1667}}^1$

素因数の和:1989

約数の個数: 32

約数和(自身を含む): 46837440

約数和(自身を除く): 26099960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 1667, 2488, 3110, 3334, 6220, 6668, 8335, 12440, 13336, 16670, 33340, 66680, 518437, 1036874, 2073748, 2592185, 4147496, 5184370, 10368740, 20737480]

約数ペア:

[(1, 20737480), (2, 10368740), (4, 5184370), (5, 4147496), (8, 2592185), (10, 2073748), (20, 1036874), (40, 518437), (311, 66680), (622, 33340), (1244, 16670), (1555, 13336), (1667, 12440), (2488, 8335), (3110, 6668), (3334, 6220)]