81682750

素因数分解:

$2^1\times 5^3\times {\mathrm{397}}^1\times {\mathrm{823}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 153481536

約数和(自身を除く): 71798786

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 397, 794, 823, 1646, 1985, 3970, 4115, 8230, 9925, 19850, 20575, 41150, 49625, 99250, 102875, 205750, 326731, 653462, 1633655, 3267310, 8168275, 16336550, 40841375, 81682750]

約数ペア:

[(1, 81682750), (2, 40841375), (5, 16336550), (10, 8168275), (25, 3267310), (50, 1633655), (125, 653462), (250, 326731), (397, 205750), (794, 102875), (823, 99250), (1646, 49625), (1985, 41150), (3970, 20575), (4115, 19850), (8230, 9925)]