20161987160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{126107}}^1$

素因数の和:126696

約数の個数: 64

約数和(自身を含む): 51936318720

約数和(自身を除く): 31774331560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 571, 1142, 2284, 2855, 3997, 4568, 5710, 7994, 11420, 15988, 19985, 22840, 31976, 39970, 79940, 126107, 159880, 252214, 504428, 630535, 882749, 1008856, 1261070, 1765498, 2522140, 3530996, 4413745, 5044280, 7061992, 8827490, 17654980, 35309960, 72007097, 144014194, 288028388, 360035485, 504049679, 576056776, 720070970, 1008099358, 1440141940, 2016198716, 2520248395, 2880283880, 4032397432, 5040496790, 10080993580, 20161987160]

約数ペア:

[(1, 20161987160), (2, 10080993580), (4, 5040496790), (5, 4032397432), (7, 2880283880), (8, 2520248395), (10, 2016198716), (14, 1440141940), (20, 1008099358), (28, 720070970), (35, 576056776), (40, 504049679), (56, 360035485), (70, 288028388), (140, 144014194), (280, 72007097), (571, 35309960), (1142, 17654980), (2284, 8827490), (2855, 7061992), (3997, 5044280), (4568, 4413745), (5710, 3530996), (7994, 2522140), (11420, 1765498), (15988, 1261070), (19985, 1008856), (22840, 882749), (31976, 630535), (39970, 504428), (79940, 252214), (126107, 159880)]