20185480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72091}}^1$

素因数の和:72109

約数の個数: 32

約数和(自身を含む): 51906240

約数和(自身を除く): 31720760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72091, 144182, 288364, 360455, 504637, 576728, 720910, 1009274, 1441820, 2018548, 2523185, 2883640, 4037096, 5046370, 10092740, 20185480]

約数ペア:

[(1, 20185480), (2, 10092740), (4, 5046370), (5, 4037096), (7, 2883640), (8, 2523185), (10, 2018548), (14, 1441820), (20, 1009274), (28, 720910), (35, 576728), (40, 504637), (56, 360455), (70, 288364), (140, 144182), (280, 72091)]