66289640

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{4327}}^1$

素因数の和:4721

約数の個数: 32

約数和(自身を含む): 149575680

約数和(自身を除く): 83286040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 4327, 7660, 8654, 15320, 17308, 21635, 34616, 43270, 86540, 173080, 1657241, 3314482, 6628964, 8286205, 13257928, 16572410, 33144820, 66289640]

約数ペア:

[(1, 66289640), (2, 33144820), (4, 16572410), (5, 13257928), (8, 8286205), (10, 6628964), (20, 3314482), (40, 1657241), (383, 173080), (766, 86540), (1532, 43270), (1915, 34616), (3064, 21635), (3830, 17308), (4327, 15320), (7660, 8654)]