21191664

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{33961}}^1$

素因数の和:33985

約数の個数: 40

約数和(自身を含む): 58958032

約数和(自身を除く): 37766368

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 33961, 67922, 101883, 135844, 203766, 271688, 407532, 441493, 543376, 815064, 882986, 1324479, 1630128, 1765972, 2648958, 3531944, 5297916, 7063888, 10595832, 21191664]

約数ペア:

[(1, 21191664), (2, 10595832), (3, 7063888), (4, 5297916), (6, 3531944), (8, 2648958), (12, 1765972), (13, 1630128), (16, 1324479), (24, 882986), (26, 815064), (39, 543376), (48, 441493), (52, 407532), (78, 271688), (104, 203766), (156, 135844), (208, 101883), (312, 67922), (624, 33961)]