21725284

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 46318720

約数和(自身を除く): 24593436

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 97, 133, 194, 266, 388, 421, 532, 679, 842, 1358, 1684, 1843, 2716, 2947, 3686, 5894, 7372, 7999, 11788, 12901, 15998, 25802, 31996, 40837, 51604, 55993, 81674, 111986, 163348, 223972, 285859, 571718, 775903, 1143436, 1551806, 3103612, 5431321, 10862642, 21725284]

約数ペア:

[(1, 21725284), (2, 10862642), (4, 5431321), (7, 3103612), (14, 1551806), (19, 1143436), (28, 775903), (38, 571718), (76, 285859), (97, 223972), (133, 163348), (194, 111986), (266, 81674), (388, 55993), (421, 51604), (532, 40837), (679, 31996), (842, 25802), (1358, 15998), (1684, 12901), (1843, 11788), (2716, 7999), (2947, 7372), (3686, 5894)]