71091340

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{13831}}^1$

素因数の和:14097

約数の個数: 24

約数和(自身を含む): 149883552

約数和(自身を除く): 78792212

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 13831, 27662, 55324, 69155, 138310, 276620, 3554567, 7109134, 14218268, 17772835, 35545670, 71091340]

約数ペア:

[(1, 71091340), (2, 35545670), (4, 17772835), (5, 14218268), (10, 7109134), (20, 3554567), (257, 276620), (514, 138310), (1028, 69155), (1285, 55324), (2570, 27662), (5140, 13831)]