20981004

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2999}}^1$

素因数の和:3070

約数の個数: 48

約数和(自身を含む): 54432000

約数和(自身を除く): 33450996

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 53, 66, 106, 132, 159, 212, 318, 583, 636, 1166, 1749, 2332, 2999, 3498, 5998, 6996, 8997, 11996, 17994, 32989, 35988, 65978, 98967, 131956, 158947, 197934, 317894, 395868, 476841, 635788, 953682, 1748417, 1907364, 3496834, 5245251, 6993668, 10490502, 20981004]

約数ペア:

[(1, 20981004), (2, 10490502), (3, 6993668), (4, 5245251), (6, 3496834), (11, 1907364), (12, 1748417), (22, 953682), (33, 635788), (44, 476841), (53, 395868), (66, 317894), (106, 197934), (132, 158947), (159, 131956), (212, 98967), (318, 65978), (583, 35988), (636, 32989), (1166, 17994), (1749, 11996), (2332, 8997), (2999, 6996), (3498, 5998)]