20780116

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1093}}^1$

素因数の和:1208

約数の個数: 36

約数和(自身を含む): 42777588

約数和(自身を除く): 21997472

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 388, 679, 1093, 1358, 2186, 2716, 4372, 4753, 7651, 9506, 15302, 19012, 30604, 53557, 106021, 107114, 212042, 214228, 424084, 742147, 1484294, 2968588, 5195029, 10390058, 20780116]

約数ペア:

[(1, 20780116), (2, 10390058), (4, 5195029), (7, 2968588), (14, 1484294), (28, 742147), (49, 424084), (97, 214228), (98, 212042), (194, 107114), (196, 106021), (388, 53557), (679, 30604), (1093, 19012), (1358, 15302), (2186, 9506), (2716, 7651), (4372, 4753)]