213491109

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{431}}^1\times {\mathrm{977}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 309267072

約数和(自身を除く): 95775963

約数列:

[1, 3, 13, 39, 169, 431, 507, 977, 1293, 2931, 5603, 12701, 16809, 38103, 72839, 165113, 218517, 421087, 495339, 1263261, 5474131, 16422393, 71163703, 213491109]

約数ペア:

[(1, 213491109), (3, 71163703), (13, 16422393), (39, 5474131), (169, 1263261), (431, 495339), (507, 421087), (977, 218517), (1293, 165113), (2931, 72839), (5603, 38103), (12701, 16809)]