19037109

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 31530240

約数和(自身を除く): 12493131

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 509, 959, 1527, 1781, 2877, 3563, 5343, 6617, 10689, 12467, 19851, 37401, 46319, 69733, 138957, 209199, 488131, 906529, 1464393, 2719587, 6345703, 19037109]

約数ペア:

[(1, 19037109), (3, 6345703), (7, 2719587), (13, 1464393), (21, 906529), (39, 488131), (91, 209199), (137, 138957), (273, 69733), (411, 46319), (509, 37401), (959, 19851), (1527, 12467), (1781, 10689), (2877, 6617), (3563, 5343)]