25000780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 61937568

約数和(自身を除く): 36936788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 97, 98, 140, 194, 196, 245, 263, 388, 485, 490, 526, 679, 970, 980, 1052, 1315, 1358, 1841, 1940, 2630, 2716, 3395, 3682, 4753, 5260, 6790, 7364, 9205, 9506, 12887, 13580, 18410, 19012, 23765, 25511, 25774, 36820, 47530, 51022, 51548, 64435, 95060, 102044, 127555, 128870, 178577, 255110, 257740, 357154, 510220, 714308, 892885, 1250039, 1785770, 2500078, 3571540, 5000156, 6250195, 12500390, 25000780]

約数ペア:

[(1, 25000780), (2, 12500390), (4, 6250195), (5, 5000156), (7, 3571540), (10, 2500078), (14, 1785770), (20, 1250039), (28, 892885), (35, 714308), (49, 510220), (70, 357154), (97, 257740), (98, 255110), (140, 178577), (194, 128870), (196, 127555), (245, 102044), (263, 95060), (388, 64435), (485, 51548), (490, 51022), (526, 47530), (679, 36820), (970, 25774), (980, 25511), (1052, 23765), (1315, 19012), (1358, 18410), (1841, 13580), (1940, 12887), (2630, 9506), (2716, 9205), (3395, 7364), (3682, 6790), (4753, 5260)]