20022471

素因数分解:

$3^5\times 7^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34944000

約数和(自身を除く): 14921529

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 81, 149, 189, 237, 243, 447, 553, 567, 711, 1043, 1341, 1659, 1701, 2133, 3129, 4023, 4977, 6399, 9387, 11771, 12069, 14931, 19197, 28161, 35313, 36207, 44793, 82397, 84483, 105939, 134379, 247191, 253449, 317817, 741573, 953451, 2224719, 2860353, 6674157, 20022471]

約数ペア:

[(1, 20022471), (3, 6674157), (7, 2860353), (9, 2224719), (21, 953451), (27, 741573), (63, 317817), (79, 253449), (81, 247191), (149, 134379), (189, 105939), (237, 84483), (243, 82397), (447, 44793), (553, 36207), (567, 35313), (711, 28161), (1043, 19197), (1341, 14931), (1659, 12069), (1701, 11771), (2133, 9387), (3129, 6399), (4023, 4977)]