20697061

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 28892160

約数和(自身を除く): 8195099

約数列:

[1, 7, 11, 19, 43, 47, 49, 77, 133, 209, 301, 329, 473, 517, 539, 817, 893, 931, 1463, 2021, 2107, 2303, 3311, 3619, 5719, 6251, 8987, 9823, 10241, 14147, 22231, 23177, 25333, 38399, 40033, 43757, 62909, 68761, 99029, 155617, 268793, 422389, 440363, 481327, 1089319, 1881551, 2956723, 20697061]

約数ペア:

[(1, 20697061), (7, 2956723), (11, 1881551), (19, 1089319), (43, 481327), (47, 440363), (49, 422389), (77, 268793), (133, 155617), (209, 99029), (301, 68761), (329, 62909), (473, 43757), (517, 40033), (539, 38399), (817, 25333), (893, 23177), (931, 22231), (1463, 14147), (2021, 10241), (2107, 9823), (2303, 8987), (3311, 6251), (3619, 5719)]