20361555

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 37380096

約数和(自身を除く): 17018541

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 103, 115, 191, 207, 309, 345, 515, 573, 927, 955, 1035, 1545, 1719, 2369, 2865, 4393, 4635, 7107, 8595, 11845, 13179, 19673, 21321, 21965, 35535, 39537, 59019, 65895, 98365, 106605, 177057, 197685, 295095, 452479, 885285, 1357437, 2262395, 4072311, 6787185, 20361555]

約数ペア:

[(1, 20361555), (3, 6787185), (5, 4072311), (9, 2262395), (15, 1357437), (23, 885285), (45, 452479), (69, 295095), (103, 197685), (115, 177057), (191, 106605), (207, 98365), (309, 65895), (345, 59019), (515, 39537), (573, 35535), (927, 21965), (955, 21321), (1035, 19673), (1545, 13179), (1719, 11845), (2369, 8595), (2865, 7107), (4393, 4635)]