19966485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{293}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20676075

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 59, 77, 105, 165, 177, 231, 293, 295, 385, 413, 649, 879, 885, 1155, 1239, 1465, 1947, 2051, 2065, 3223, 3245, 4395, 4543, 6153, 6195, 9669, 9735, 10255, 13629, 16115, 17287, 22561, 22715, 30765, 48345, 51861, 67683, 68145, 86435, 112805, 121009, 190157, 259305, 338415, 363027, 570471, 605045, 950785, 1331099, 1815135, 2852355, 3993297, 6655495, 19966485]

約数ペア:

[(1, 19966485), (3, 6655495), (5, 3993297), (7, 2852355), (11, 1815135), (15, 1331099), (21, 950785), (33, 605045), (35, 570471), (55, 363027), (59, 338415), (77, 259305), (105, 190157), (165, 121009), (177, 112805), (231, 86435), (293, 68145), (295, 67683), (385, 51861), (413, 48345), (649, 30765), (879, 22715), (885, 22561), (1155, 17287), (1239, 16115), (1465, 13629), (1947, 10255), (2051, 9735), (2065, 9669), (3223, 6195), (3245, 6153), (4395, 4543)]