20071345

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 8668751

約数列:

[1, 5, 7, 35, 41, 71, 197, 205, 287, 355, 497, 985, 1379, 1435, 2485, 2911, 6895, 8077, 13987, 14555, 20377, 40385, 56539, 69935, 97909, 101885, 282695, 489545, 573467, 2867335, 4014269, 20071345]

約数ペア:

[(1, 20071345), (5, 4014269), (7, 2867335), (35, 573467), (41, 489545), (71, 282695), (197, 101885), (205, 97909), (287, 69935), (355, 56539), (497, 40385), (985, 20377), (1379, 14555), (1435, 13987), (2485, 8077), (2911, 6895)]