20785100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1291}}^1$

素因数の和:1335

約数の個数: 72

約数和(自身を含む): 53829888

約数和(自身を除く): 33044788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 140, 161, 175, 230, 322, 350, 460, 575, 644, 700, 805, 1150, 1291, 1610, 2300, 2582, 3220, 4025, 5164, 6455, 8050, 9037, 12910, 16100, 18074, 25820, 29693, 32275, 36148, 45185, 59386, 64550, 90370, 118772, 129100, 148465, 180740, 207851, 225925, 296930, 415702, 451850, 593860, 742325, 831404, 903700, 1039255, 1484650, 2078510, 2969300, 4157020, 5196275, 10392550, 20785100]

約数ペア:

[(1, 20785100), (2, 10392550), (4, 5196275), (5, 4157020), (7, 2969300), (10, 2078510), (14, 1484650), (20, 1039255), (23, 903700), (25, 831404), (28, 742325), (35, 593860), (46, 451850), (50, 415702), (70, 296930), (92, 225925), (100, 207851), (115, 180740), (140, 148465), (161, 129100), (175, 118772), (230, 90370), (322, 64550), (350, 59386), (460, 45185), (575, 36148), (644, 32275), (700, 29693), (805, 25820), (1150, 18074), (1291, 16100), (1610, 12910), (2300, 9037), (2582, 8050), (3220, 6455), (4025, 5164)]