19651720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{757}}^1$

素因数の和:838

約数の個数: 64

約数和(自身を含む): 49118400

約数和(自身を除く): 29466680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 757, 1180, 1298, 1514, 2360, 2596, 3028, 3245, 3785, 5192, 6056, 6490, 7570, 8327, 12980, 15140, 16654, 25960, 30280, 33308, 41635, 44663, 66616, 83270, 89326, 166540, 178652, 223315, 333080, 357304, 446630, 491293, 893260, 982586, 1786520, 1965172, 2456465, 3930344, 4912930, 9825860, 19651720]

約数ペア:

[(1, 19651720), (2, 9825860), (4, 4912930), (5, 3930344), (8, 2456465), (10, 1965172), (11, 1786520), (20, 982586), (22, 893260), (40, 491293), (44, 446630), (55, 357304), (59, 333080), (88, 223315), (110, 178652), (118, 166540), (220, 89326), (236, 83270), (295, 66616), (440, 44663), (472, 41635), (590, 33308), (649, 30280), (757, 25960), (1180, 16654), (1298, 15140), (1514, 12980), (2360, 8327), (2596, 7570), (3028, 6490), (3245, 6056), (3785, 5192)]