20217480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:854

約数の個数: 64

約数和(自身を含む): 60955200

約数和(自身を除く): 40737720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 331, 509, 662, 993, 1018, 1324, 1527, 1655, 1986, 2036, 2545, 2648, 3054, 3310, 3972, 4072, 4965, 5090, 6108, 6620, 7635, 7944, 9930, 10180, 12216, 13240, 15270, 19860, 20360, 30540, 39720, 61080, 168479, 336958, 505437, 673916, 842395, 1010874, 1347832, 1684790, 2021748, 2527185, 3369580, 4043496, 5054370, 6739160, 10108740, 20217480]

約数ペア:

[(1, 20217480), (2, 10108740), (3, 6739160), (4, 5054370), (5, 4043496), (6, 3369580), (8, 2527185), (10, 2021748), (12, 1684790), (15, 1347832), (20, 1010874), (24, 842395), (30, 673916), (40, 505437), (60, 336958), (120, 168479), (331, 61080), (509, 39720), (662, 30540), (993, 20360), (1018, 19860), (1324, 15270), (1527, 13240), (1655, 12216), (1986, 10180), (2036, 9930), (2545, 7944), (2648, 7635), (3054, 6620), (3310, 6108), (3972, 5090), (4072, 4965)]