20914047

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 17244801

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 103, 231, 293, 309, 693, 721, 879, 927, 1133, 2051, 2163, 2637, 3223, 3399, 6153, 6489, 7931, 9669, 10197, 18459, 22561, 23793, 29007, 30179, 67683, 71379, 90537, 203049, 211253, 271611, 331969, 633759, 995907, 1901277, 2323783, 2987721, 6971349, 20914047]

約数ペア:

[(1, 20914047), (3, 6971349), (7, 2987721), (9, 2323783), (11, 1901277), (21, 995907), (33, 633759), (63, 331969), (77, 271611), (99, 211253), (103, 203049), (231, 90537), (293, 71379), (309, 67683), (693, 30179), (721, 29007), (879, 23793), (927, 22561), (1133, 18459), (2051, 10197), (2163, 9669), (2637, 7931), (3223, 6489), (3399, 6153)]