1979560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{409}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 4907700

約数和(自身を除く): 2928140

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 409, 440, 484, 605, 818, 968, 1210, 1636, 2045, 2420, 3272, 4090, 4499, 4840, 8180, 8998, 16360, 17996, 22495, 35992, 44990, 49489, 89980, 98978, 179960, 197956, 247445, 395912, 494890, 989780, 1979560]

約数ペア:

[(1, 1979560), (2, 989780), (4, 494890), (5, 395912), (8, 247445), (10, 197956), (11, 179960), (20, 98978), (22, 89980), (40, 49489), (44, 44990), (55, 35992), (88, 22495), (110, 17996), (121, 16360), (220, 8998), (242, 8180), (409, 4840), (440, 4499), (484, 4090), (605, 3272), (818, 2420), (968, 2045), (1210, 1636)]