20731920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7853}}^1$

素因数の和:7880

約数の個数: 80

約数和(自身を含む): 70120512

約数和(自身を除く): 49388592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7853, 15706, 23559, 31412, 39265, 47118, 62824, 78530, 86383, 94236, 117795, 125648, 157060, 172766, 188472, 235590, 259149, 314120, 345532, 376944, 431915, 471180, 518298, 628240, 691064, 863830, 942360, 1036596, 1295745, 1382128, 1727660, 1884720, 2073192, 2591490, 3455320, 4146384, 5182980, 6910640, 10365960, 20731920]

約数ペア:

[(1, 20731920), (2, 10365960), (3, 6910640), (4, 5182980), (5, 4146384), (6, 3455320), (8, 2591490), (10, 2073192), (11, 1884720), (12, 1727660), (15, 1382128), (16, 1295745), (20, 1036596), (22, 942360), (24, 863830), (30, 691064), (33, 628240), (40, 518298), (44, 471180), (48, 431915), (55, 376944), (60, 345532), (66, 314120), (80, 259149), (88, 235590), (110, 188472), (120, 172766), (132, 157060), (165, 125648), (176, 117795), (220, 94236), (240, 86383), (264, 78530), (330, 62824), (440, 47118), (528, 39265), (660, 31412), (880, 23559), (1320, 15706), (2640, 7853)]