20100520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4153}}^1$

素因数の和:4186

約数の個数: 48

約数和(自身を含む): 49723380

約数和(自身を除く): 29622860

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4153, 4840, 8306, 16612, 20765, 33224, 41530, 45683, 83060, 91366, 166120, 182732, 228415, 365464, 456830, 502513, 913660, 1005026, 1827320, 2010052, 2512565, 4020104, 5025130, 10050260, 20100520]

約数ペア:

[(1, 20100520), (2, 10050260), (4, 5025130), (5, 4020104), (8, 2512565), (10, 2010052), (11, 1827320), (20, 1005026), (22, 913660), (40, 502513), (44, 456830), (55, 365464), (88, 228415), (110, 182732), (121, 166120), (220, 91366), (242, 83060), (440, 45683), (484, 41530), (605, 33224), (968, 20765), (1210, 16612), (2420, 8306), (4153, 4840)]