205142007

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1\times {\mathrm{691}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 319227904

約数和(自身を除く): 114085897

約数列:

[1, 3, 7, 21, 67, 201, 211, 469, 633, 691, 1407, 1477, 2073, 4431, 4837, 14137, 14511, 42411, 46297, 98959, 138891, 145801, 296877, 324079, 437403, 972237, 1020607, 3061821, 9768667, 29306001, 68380669, 205142007]

約数ペア:

[(1, 205142007), (3, 68380669), (7, 29306001), (21, 9768667), (67, 3061821), (201, 1020607), (211, 972237), (469, 437403), (633, 324079), (691, 296877), (1407, 145801), (1477, 138891), (2073, 98959), (4431, 46297), (4837, 42411), (14137, 14511)]