18909956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 37801344

約数和(自身を除く): 18891388

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 92, 97, 163, 194, 299, 326, 388, 598, 652, 1196, 1261, 2119, 2231, 2522, 3749, 4238, 4462, 5044, 7498, 8476, 8924, 14996, 15811, 29003, 31622, 48737, 58006, 63244, 97474, 116012, 194948, 205543, 363653, 411086, 727306, 822172, 1454612, 4727489, 9454978, 18909956]

約数ペア:

[(1, 18909956), (2, 9454978), (4, 4727489), (13, 1454612), (23, 822172), (26, 727306), (46, 411086), (52, 363653), (92, 205543), (97, 194948), (163, 116012), (194, 97474), (299, 63244), (326, 58006), (388, 48737), (598, 31622), (652, 29003), (1196, 15811), (1261, 14996), (2119, 8924), (2231, 8476), (2522, 7498), (3749, 5044), (4238, 4462)]