21310359500

素因数分解:

$2^2\times 5^3\times {\mathrm{131}}^1\times {\mathrm{325349}}^1$

素因数の和:325499

約数の個数: 48

約数和(自身を含む): 46897250400

約数和(自身を除く): 25586890900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 131, 250, 262, 500, 524, 655, 1310, 2620, 3275, 6550, 13100, 16375, 32750, 65500, 325349, 650698, 1301396, 1626745, 3253490, 6506980, 8133725, 16267450, 32534900, 40668625, 42620719, 81337250, 85241438, 162674500, 170482876, 213103595, 426207190, 852414380, 1065517975, 2131035950, 4262071900, 5327589875, 10655179750, 21310359500]

約数ペア:

[(1, 21310359500), (2, 10655179750), (4, 5327589875), (5, 4262071900), (10, 2131035950), (20, 1065517975), (25, 852414380), (50, 426207190), (100, 213103595), (125, 170482876), (131, 162674500), (250, 85241438), (262, 81337250), (500, 42620719), (524, 40668625), (655, 32534900), (1310, 16267450), (2620, 8133725), (3275, 6506980), (6550, 3253490), (13100, 1626745), (16375, 1301396), (32750, 650698), (65500, 325349)]