20915314

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1378

約数の個数: 32

約数和(自身を含む): 38390400

約数和(自身を除く): 17475086

約数列:

[1, 2, 7, 14, 19, 38, 61, 122, 133, 266, 427, 854, 1159, 1289, 2318, 2578, 8113, 9023, 16226, 18046, 24491, 48982, 78629, 157258, 171437, 342874, 550403, 1100806, 1493951, 2987902, 10457657, 20915314]

約数ペア:

[(1, 20915314), (2, 10457657), (7, 2987902), (14, 1493951), (19, 1100806), (38, 550403), (61, 342874), (122, 171437), (133, 157258), (266, 78629), (427, 48982), (854, 24491), (1159, 18046), (1289, 16226), (2318, 9023), (2578, 8113)]