20517390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{823}}^1$

素因数の和:1113

約数の個数: 48

約数和(自身を含む): 53602848

約数和(自身を除く): 33085458

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 277, 554, 823, 831, 1385, 1646, 1662, 2469, 2493, 2770, 4115, 4155, 4938, 4986, 7407, 8230, 8310, 12345, 12465, 14814, 24690, 24930, 37035, 74070, 227971, 455942, 683913, 1139855, 1367826, 2051739, 2279710, 3419565, 4103478, 6839130, 10258695, 20517390]

約数ペア:

[(1, 20517390), (2, 10258695), (3, 6839130), (5, 4103478), (6, 3419565), (9, 2279710), (10, 2051739), (15, 1367826), (18, 1139855), (30, 683913), (45, 455942), (90, 227971), (277, 74070), (554, 37035), (823, 24930), (831, 24690), (1385, 14814), (1646, 12465), (1662, 12345), (2469, 8310), (2493, 8230), (2770, 7407), (4115, 4986), (4155, 4938)]