20386520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6619}}^1$

素因数の和:6648

約数の個数: 64

約数和(自身を含む): 57196800

約数和(自身を除く): 36810280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6619, 13238, 26476, 33095, 46333, 52952, 66190, 72809, 92666, 132380, 145618, 185332, 231665, 264760, 291236, 364045, 370664, 463330, 509663, 582472, 728090, 926660, 1019326, 1456180, 1853320, 2038652, 2548315, 2912360, 4077304, 5096630, 10193260, 20386520]

約数ペア:

[(1, 20386520), (2, 10193260), (4, 5096630), (5, 4077304), (7, 2912360), (8, 2548315), (10, 2038652), (11, 1853320), (14, 1456180), (20, 1019326), (22, 926660), (28, 728090), (35, 582472), (40, 509663), (44, 463330), (55, 370664), (56, 364045), (70, 291236), (77, 264760), (88, 231665), (110, 185332), (140, 145618), (154, 132380), (220, 92666), (280, 72809), (308, 66190), (385, 52952), (440, 46333), (616, 33095), (770, 26476), (1540, 13238), (3080, 6619)]