20470880

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1319}}^1$

素因数の和:1431

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 28427200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1319, 1552, 1940, 2638, 3104, 3880, 5276, 6595, 7760, 10552, 13190, 15520, 21104, 26380, 42208, 52760, 105520, 127943, 211040, 255886, 511772, 639715, 1023544, 1279430, 2047088, 2558860, 4094176, 5117720, 10235440, 20470880]

約数ペア:

[(1, 20470880), (2, 10235440), (4, 5117720), (5, 4094176), (8, 2558860), (10, 2047088), (16, 1279430), (20, 1023544), (32, 639715), (40, 511772), (80, 255886), (97, 211040), (160, 127943), (194, 105520), (388, 52760), (485, 42208), (776, 26380), (970, 21104), (1319, 15520), (1552, 13190), (1940, 10552), (2638, 7760), (3104, 6595), (3880, 5276)]