20689461

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 34856640

約数和(自身を除く): 14167179

約数列:

[1, 3, 9, 13, 19, 39, 41, 57, 117, 123, 171, 227, 247, 369, 533, 681, 741, 779, 1599, 2043, 2223, 2337, 2951, 4313, 4797, 7011, 8853, 9307, 10127, 12939, 26559, 27921, 30381, 38817, 56069, 83763, 91143, 120991, 168207, 176833, 362973, 504621, 530499, 1088919, 1591497, 2298829, 6896487, 20689461]

約数ペア:

[(1, 20689461), (3, 6896487), (9, 2298829), (13, 1591497), (19, 1088919), (39, 530499), (41, 504621), (57, 362973), (117, 176833), (123, 168207), (171, 120991), (227, 91143), (247, 83763), (369, 56069), (533, 38817), (681, 30381), (741, 27921), (779, 26559), (1599, 12939), (2043, 10127), (2223, 9307), (2337, 8853), (2951, 7011), (4313, 4797)]