19807480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 57024000

約数和(自身を除く): 37216520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 59, 70, 77, 88, 109, 110, 118, 140, 154, 218, 220, 236, 280, 295, 308, 385, 413, 436, 440, 472, 545, 590, 616, 649, 763, 770, 826, 872, 1090, 1180, 1199, 1298, 1526, 1540, 1652, 2065, 2180, 2360, 2398, 2596, 3052, 3080, 3245, 3304, 3815, 4130, 4360, 4543, 4796, 5192, 5995, 6104, 6431, 6490, 7630, 8260, 8393, 9086, 9592, 11990, 12862, 12980, 15260, 16520, 16786, 18172, 22715, 23980, 25724, 25960, 30520, 32155, 33572, 36344, 41965, 45017, 45430, 47960, 51448, 64310, 67144, 70741, 83930, 90034, 90860, 128620, 141482, 167860, 180068, 181720, 225085, 257240, 282964, 335720, 353705, 360136, 450170, 495187, 565928, 707410, 900340, 990374, 1414820, 1800680, 1980748, 2475935, 2829640, 3961496, 4951870, 9903740, 19807480]

約数ペア:

[(1, 19807480), (2, 9903740), (4, 4951870), (5, 3961496), (7, 2829640), (8, 2475935), (10, 1980748), (11, 1800680), (14, 1414820), (20, 990374), (22, 900340), (28, 707410), (35, 565928), (40, 495187), (44, 450170), (55, 360136), (56, 353705), (59, 335720), (70, 282964), (77, 257240), (88, 225085), (109, 181720), (110, 180068), (118, 167860), (140, 141482), (154, 128620), (218, 90860), (220, 90034), (236, 83930), (280, 70741), (295, 67144), (308, 64310), (385, 51448), (413, 47960), (436, 45430), (440, 45017), (472, 41965), (545, 36344), (590, 33572), (616, 32155), (649, 30520), (763, 25960), (770, 25724), (826, 23980), (872, 22715), (1090, 18172), (1180, 16786), (1199, 16520), (1298, 15260), (1526, 12980), (1540, 12862), (1652, 11990), (2065, 9592), (2180, 9086), (2360, 8393), (2398, 8260), (2596, 7630), (3052, 6490), (3080, 6431), (3245, 6104), (3304, 5995), (3815, 5192), (4130, 4796), (4360, 4543)]