21273065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20357}}^1$

素因数の和:20392

約数の個数: 16

約数和(自身を含む): 29315520

約数和(自身を除く): 8042455

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20357, 101785, 223927, 386783, 1119635, 1933915, 4254613, 21273065]

約数ペア:

[(1, 21273065), (5, 4254613), (11, 1933915), (19, 1119635), (55, 386783), (95, 223927), (209, 101785), (1045, 20357)]