18899608

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1997}}^1$

素因数の和:2036

約数の個数: 48

約数和(自身を含む): 43876080

約数和(自身を除く): 24976472

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 1997, 2366, 3994, 4732, 7988, 9464, 13979, 15976, 25961, 27958, 51922, 55916, 103844, 111832, 181727, 207688, 337493, 363454, 674986, 726908, 1349972, 1453816, 2362451, 2699944, 4724902, 9449804, 18899608]

約数ペア:

[(1, 18899608), (2, 9449804), (4, 4724902), (7, 2699944), (8, 2362451), (13, 1453816), (14, 1349972), (26, 726908), (28, 674986), (52, 363454), (56, 337493), (91, 207688), (104, 181727), (169, 111832), (182, 103844), (338, 55916), (364, 51922), (676, 27958), (728, 25961), (1183, 15976), (1352, 13979), (1997, 9464), (2366, 7988), (3994, 4732)]