20700500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2179}}^1$

素因数の和:2217

約数の個数: 48

約数和(自身を含む): 47611200

約数和(自身を除く): 26910700

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2179, 2375, 4358, 4750, 8716, 9500, 10895, 21790, 41401, 43580, 54475, 82802, 108950, 165604, 207005, 217900, 272375, 414010, 544750, 828020, 1035025, 1089500, 2070050, 4140100, 5175125, 10350250, 20700500]

約数ペア:

[(1, 20700500), (2, 10350250), (4, 5175125), (5, 4140100), (10, 2070050), (19, 1089500), (20, 1035025), (25, 828020), (38, 544750), (50, 414010), (76, 272375), (95, 217900), (100, 207005), (125, 165604), (190, 108950), (250, 82802), (380, 54475), (475, 43580), (500, 41401), (950, 21790), (1900, 10895), (2179, 9500), (2375, 8716), (4358, 4750)]