21503109

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{463}}^1$

素因数の和:716

約数の個数: 16

約数和(自身を含む): 29198592

約数和(自身を除く): 7695483

約数列:

[1, 3, 113, 137, 339, 411, 463, 1389, 15481, 46443, 52319, 63431, 156957, 190293, 7167703, 21503109]

約数ペア:

[(1, 21503109), (3, 7167703), (113, 190293), (137, 156957), (339, 63431), (411, 52319), (463, 46443), (1389, 15481)]