20011684

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1576

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 24695132

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 154, 172, 301, 308, 473, 602, 946, 1204, 1511, 1892, 3022, 3311, 6044, 6622, 10577, 13244, 16621, 21154, 33242, 42308, 64973, 66484, 116347, 129946, 232694, 259892, 454811, 465388, 714703, 909622, 1429406, 1819244, 2858812, 5002921, 10005842, 20011684]

約数ペア:

[(1, 20011684), (2, 10005842), (4, 5002921), (7, 2858812), (11, 1819244), (14, 1429406), (22, 909622), (28, 714703), (43, 465388), (44, 454811), (77, 259892), (86, 232694), (154, 129946), (172, 116347), (301, 66484), (308, 64973), (473, 42308), (602, 33242), (946, 21154), (1204, 16621), (1511, 13244), (1892, 10577), (3022, 6622), (3311, 6044)]