21062970

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 35546310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 181, 270, 362, 431, 543, 862, 905, 1086, 1293, 1629, 1810, 2155, 2586, 2715, 3258, 3879, 4310, 4887, 5430, 6465, 7758, 8145, 9774, 11637, 12930, 16290, 19395, 23274, 24435, 38790, 48870, 58185, 78011, 116370, 156022, 234033, 390055, 468066, 702099, 780110, 1170165, 1404198, 2106297, 2340330, 3510495, 4212594, 7020990, 10531485, 21062970]

約数ペア:

[(1, 21062970), (2, 10531485), (3, 7020990), (5, 4212594), (6, 3510495), (9, 2340330), (10, 2106297), (15, 1404198), (18, 1170165), (27, 780110), (30, 702099), (45, 468066), (54, 390055), (90, 234033), (135, 156022), (181, 116370), (270, 78011), (362, 58185), (431, 48870), (543, 38790), (862, 24435), (905, 23274), (1086, 19395), (1293, 16290), (1629, 12930), (1810, 11637), (2155, 9774), (2586, 8145), (2715, 7758), (3258, 6465), (3879, 5430), (4310, 4887)]