20171801720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72042149}}^1$

素因数の和:72042167

約数の個数: 32

約数和(自身を含む): 51870348000

約数和(自身を除く): 31698546280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72042149, 144084298, 288168596, 360210745, 504295043, 576337192, 720421490, 1008590086, 1440842980, 2017180172, 2521475215, 2881685960, 4034360344, 5042950430, 10085900860, 20171801720]

約数ペア:

[(1, 20171801720), (2, 10085900860), (4, 5042950430), (5, 4034360344), (7, 2881685960), (8, 2521475215), (10, 2017180172), (14, 1440842980), (20, 1008590086), (28, 720421490), (35, 576337192), (40, 504295043), (56, 360210745), (70, 288168596), (140, 144084298), (280, 72042149)]