20805040004

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2909}}^1\times {\mathrm{3499}}^1$

素因数の和:6492

約数の個数: 48

約数和(自身を含む): 42206640000

約数和(自身を除く): 21401599996

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 2909, 3499, 5818, 6998, 11636, 13996, 20363, 24493, 40726, 48986, 81452, 97972, 212357, 255427, 424714, 510854, 849428, 1021708, 1486499, 1787989, 2972998, 3575978, 5945996, 7151956, 10178591, 20357182, 40714364, 71250137, 142500274, 285000548, 743037143, 1486074286, 2972148572, 5201260001, 10402520002, 20805040004]

約数ペア:

[(1, 20805040004), (2, 10402520002), (4, 5201260001), (7, 2972148572), (14, 1486074286), (28, 743037143), (73, 285000548), (146, 142500274), (292, 71250137), (511, 40714364), (1022, 20357182), (2044, 10178591), (2909, 7151956), (3499, 5945996), (5818, 3575978), (6998, 2972998), (11636, 1787989), (13996, 1486499), (20363, 1021708), (24493, 849428), (40726, 510854), (48986, 424714), (81452, 255427), (97972, 212357)]