18854745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:774

約数の個数: 64

約数和(自身を含む): 39137280

約数和(自身を除く): 20282535

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 35, 39, 57, 65, 91, 95, 105, 133, 195, 247, 273, 285, 399, 455, 665, 727, 741, 1235, 1365, 1729, 1995, 2181, 3635, 3705, 5089, 5187, 8645, 9451, 10905, 13813, 15267, 25445, 25935, 28353, 41439, 47255, 66157, 69065, 76335, 96691, 141765, 179569, 198471, 207195, 290073, 330785, 483455, 538707, 897845, 992355, 1256983, 1450365, 2693535, 3770949, 6284915, 18854745]

約数ペア:

[(1, 18854745), (3, 6284915), (5, 3770949), (7, 2693535), (13, 1450365), (15, 1256983), (19, 992355), (21, 897845), (35, 538707), (39, 483455), (57, 330785), (65, 290073), (91, 207195), (95, 198471), (105, 179569), (133, 141765), (195, 96691), (247, 76335), (273, 69065), (285, 66157), (399, 47255), (455, 41439), (665, 28353), (727, 25935), (741, 25445), (1235, 15267), (1365, 13813), (1729, 10905), (1995, 9451), (2181, 8645), (3635, 5187), (3705, 5089)]