20171213881

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2309}}^1\times {\mathrm{5647}}^1$

素因数の和:7993

約数の個数: 32

約数和(自身を含む): 26302510080

約数和(自身を除く): 6131296199

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 2309, 5647, 16163, 30017, 39253, 39529, 73411, 95999, 210119, 274771, 510289, 513877, 671993, 1247987, 3572023, 8735909, 13038923, 91272461, 169505999, 221661691, 1186541993, 1551631837, 2881601983, 20171213881]

約数ペア:

[(1, 20171213881), (7, 2881601983), (13, 1551631837), (17, 1186541993), (91, 221661691), (119, 169505999), (221, 91272461), (1547, 13038923), (2309, 8735909), (5647, 3572023), (16163, 1247987), (30017, 671993), (39253, 513877), (39529, 510289), (73411, 274771), (95999, 210119)]