20427147

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1065

約数の個数: 40

約数和(自身を含む): 34625360

約数和(自身を除く): 14198213

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1021, 1053, 1539, 2223, 3063, 6669, 9189, 13273, 19399, 20007, 27567, 39819, 58197, 82701, 119457, 174591, 252187, 358371, 523773, 756561, 1075113, 1571319, 2269683, 6809049, 20427147]

約数ペア:

[(1, 20427147), (3, 6809049), (9, 2269683), (13, 1571319), (19, 1075113), (27, 756561), (39, 523773), (57, 358371), (81, 252187), (117, 174591), (171, 119457), (247, 82701), (351, 58197), (513, 39819), (741, 27567), (1021, 20007), (1053, 19399), (1539, 13273), (2223, 9189), (3063, 6669)]