20008780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{883}}^1$

素因数の和:1006

約数の個数: 48

約数和(自身を含む): 46335744

約数和(自身を除く): 26326964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 883, 1030, 1133, 1766, 2060, 2266, 3532, 4415, 4532, 5665, 8830, 9713, 11330, 17660, 19426, 22660, 38852, 48565, 90949, 97130, 181898, 194260, 363796, 454745, 909490, 1000439, 1818980, 2000878, 4001756, 5002195, 10004390, 20008780]

約数ペア:

[(1, 20008780), (2, 10004390), (4, 5002195), (5, 4001756), (10, 2000878), (11, 1818980), (20, 1000439), (22, 909490), (44, 454745), (55, 363796), (103, 194260), (110, 181898), (206, 97130), (220, 90949), (412, 48565), (515, 38852), (883, 22660), (1030, 19426), (1133, 17660), (1766, 11330), (2060, 9713), (2266, 8830), (3532, 5665), (4415, 4532)]