20903925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1373}}^1$

素因数の和:1422

約数の個数: 48

約数和(自身を含む): 40890240

約数和(自身を除く): 19986315

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 75, 87, 105, 145, 175, 203, 435, 525, 609, 725, 1015, 1373, 2175, 3045, 4119, 5075, 6865, 9611, 15225, 20595, 28833, 34325, 39817, 48055, 102975, 119451, 144165, 199085, 240275, 278719, 597255, 720825, 836157, 995425, 1393595, 2986275, 4180785, 6967975, 20903925]

約数ペア:

[(1, 20903925), (3, 6967975), (5, 4180785), (7, 2986275), (15, 1393595), (21, 995425), (25, 836157), (29, 720825), (35, 597255), (75, 278719), (87, 240275), (105, 199085), (145, 144165), (175, 119451), (203, 102975), (435, 48055), (525, 39817), (609, 34325), (725, 28833), (1015, 20595), (1373, 15225), (2175, 9611), (3045, 6865), (4119, 5075)]