20131013

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{3089}}^1$

素因数の和:3129

約数の個数: 16

約数和(自身を含む): 24720000

約数和(自身を除く): 4588987

約数列:

[1, 7, 19, 49, 133, 343, 931, 3089, 6517, 21623, 58691, 151361, 410837, 1059527, 2875859, 20131013]

約数ペア:

[(1, 20131013), (7, 2875859), (19, 1059527), (49, 410837), (133, 151361), (343, 58691), (931, 21623), (3089, 6517)]