21012663

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{829}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 34421760

約数和(自身を除く): 13409097

約数列:

[1, 3, 7, 17, 21, 51, 71, 119, 213, 357, 497, 829, 1207, 1491, 2487, 3621, 5803, 8449, 14093, 17409, 25347, 42279, 58859, 98651, 176577, 295953, 412013, 1000603, 1236039, 3001809, 7004221, 21012663]

約数ペア:

[(1, 21012663), (3, 7004221), (7, 3001809), (17, 1236039), (21, 1000603), (51, 412013), (71, 295953), (119, 176577), (213, 98651), (357, 58859), (497, 42279), (829, 25347), (1207, 17409), (1491, 14093), (2487, 8449), (3621, 5803)]