17912020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1319}}^1$

素因数の和:1432

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 25552940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1319, 1358, 1940, 2638, 2716, 3395, 5276, 6595, 6790, 9233, 13190, 13580, 18466, 26380, 36932, 46165, 92330, 127943, 184660, 255886, 511772, 639715, 895601, 1279430, 1791202, 2558860, 3582404, 4478005, 8956010, 17912020]

約数ペア:

[(1, 17912020), (2, 8956010), (4, 4478005), (5, 3582404), (7, 2558860), (10, 1791202), (14, 1279430), (20, 895601), (28, 639715), (35, 511772), (70, 255886), (97, 184660), (140, 127943), (194, 92330), (388, 46165), (485, 36932), (679, 26380), (970, 18466), (1319, 13580), (1358, 13190), (1940, 9233), (2638, 6790), (2716, 6595), (3395, 5276)]