81250120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{661}}^1$

素因数の和:1118

約数の個数: 64

約数和(自身を含む): 209721600

約数和(自身を除く): 128471480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 439, 661, 878, 1322, 1756, 2195, 2644, 3073, 3305, 3512, 4390, 4627, 5288, 6146, 6610, 8780, 9254, 12292, 13220, 15365, 17560, 18508, 23135, 24584, 26440, 30730, 37016, 46270, 61460, 92540, 122920, 185080, 290179, 580358, 1160716, 1450895, 2031253, 2321432, 2901790, 4062506, 5803580, 8125012, 10156265, 11607160, 16250024, 20312530, 40625060, 81250120]

約数ペア:

[(1, 81250120), (2, 40625060), (4, 20312530), (5, 16250024), (7, 11607160), (8, 10156265), (10, 8125012), (14, 5803580), (20, 4062506), (28, 2901790), (35, 2321432), (40, 2031253), (56, 1450895), (70, 1160716), (140, 580358), (280, 290179), (439, 185080), (661, 122920), (878, 92540), (1322, 61460), (1756, 46270), (2195, 37016), (2644, 30730), (3073, 26440), (3305, 24584), (3512, 23135), (4390, 18508), (4627, 17560), (5288, 15365), (6146, 13220), (6610, 12292), (8780, 9254)]