19905121680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{855031}}^1$

素因数の和:855144

約数の個数: 80

約数和(自身を含む): 62342093184

約数和(自身を除く): 42436971504

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 970, 1164, 1455, 1552, 1940, 2328, 2910, 3880, 4656, 5820, 7760, 11640, 23280, 855031, 1710062, 2565093, 3420124, 4275155, 5130186, 6840248, 8550310, 10260372, 12825465, 13680496, 17100620, 20520744, 25650930, 34201240, 41041488, 51301860, 68402480, 82938007, 102603720, 165876014, 205207440, 248814021, 331752028, 414690035, 497628042, 663504056, 829380070, 995256084, 1244070105, 1327008112, 1658760140, 1990512168, 2488140210, 3317520280, 3981024336, 4976280420, 6635040560, 9952560840, 19905121680]

約数ペア:

[(1, 19905121680), (2, 9952560840), (3, 6635040560), (4, 4976280420), (5, 3981024336), (6, 3317520280), (8, 2488140210), (10, 1990512168), (12, 1658760140), (15, 1327008112), (16, 1244070105), (20, 995256084), (24, 829380070), (30, 663504056), (40, 497628042), (48, 414690035), (60, 331752028), (80, 248814021), (97, 205207440), (120, 165876014), (194, 102603720), (240, 82938007), (291, 68402480), (388, 51301860), (485, 41041488), (582, 34201240), (776, 25650930), (970, 20520744), (1164, 17100620), (1455, 13680496), (1552, 12825465), (1940, 10260372), (2328, 8550310), (2910, 6840248), (3880, 5130186), (4656, 4275155), (5820, 3420124), (7760, 2565093), (11640, 1710062), (23280, 855031)]