81506490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208991}}^1$

素因数の和:209014

約数の個数: 32

約数和(自身を含む): 210663936

約数和(自身を除く): 129157446

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208991, 417982, 626973, 1044955, 1253946, 2089910, 2716883, 3134865, 5433766, 6269730, 8150649, 13584415, 16301298, 27168830, 40753245, 81506490]

約数ペア:

[(1, 81506490), (2, 40753245), (3, 27168830), (5, 16301298), (6, 13584415), (10, 8150649), (13, 6269730), (15, 5433766), (26, 3134865), (30, 2716883), (39, 2089910), (65, 1253946), (78, 1044955), (130, 626973), (195, 417982), (390, 208991)]