20119880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4157}}^1$

素因数の和:4190

約数の個数: 48

約数和(自身を含む): 49771260

約数和(自身を除く): 29651380

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, 4157, 4840, 8314, 16628, 20785, 33256, 41570, 45727, 83140, 91454, 166280, 182908, 228635, 365816, 457270, 502997, 914540, 1005994, 1829080, 2011988, 2514985, 4023976, 5029970, 10059940, 20119880]

約数ペア:

[(1, 20119880), (2, 10059940), (4, 5029970), (5, 4023976), (8, 2514985), (10, 2011988), (11, 1829080), (20, 1005994), (22, 914540), (40, 502997), (44, 457270), (55, 365816), (88, 228635), (110, 182908), (121, 166280), (220, 91454), (242, 83140), (440, 45727), (484, 41570), (605, 33256), (968, 20785), (1210, 16628), (2420, 8314), (4157, 4840)]