20288415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 40108032

約数和(自身を除く): 19819617

約数列:

[1, 3, 5, 7, 15, 21, 23, 31, 35, 69, 93, 105, 115, 155, 161, 217, 271, 345, 465, 483, 651, 713, 805, 813, 1085, 1355, 1897, 2139, 2415, 3255, 3565, 4065, 4991, 5691, 6233, 8401, 9485, 10695, 14973, 18699, 24955, 25203, 28455, 31165, 42005, 43631, 58807, 74865, 93495, 126015, 130893, 176421, 193223, 218155, 294035, 579669, 654465, 882105, 966115, 1352561, 2898345, 4057683, 6762805, 20288415]

約数ペア:

[(1, 20288415), (3, 6762805), (5, 4057683), (7, 2898345), (15, 1352561), (21, 966115), (23, 882105), (31, 654465), (35, 579669), (69, 294035), (93, 218155), (105, 193223), (115, 176421), (155, 130893), (161, 126015), (217, 93495), (271, 74865), (345, 58807), (465, 43631), (483, 42005), (651, 31165), (713, 28455), (805, 25203), (813, 24955), (1085, 18699), (1355, 14973), (1897, 10695), (2139, 9485), (2415, 8401), (3255, 6233), (3565, 5691), (4065, 4991)]