19995588

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7823}}^1$

素因数の和:7904

約数の個数: 36

約数和(自身を含む): 51262848

約数和(自身を除く): 31267260

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7823, 15646, 23469, 31292, 46938, 70407, 93876, 140814, 281628, 555433, 1110866, 1666299, 2221732, 3332598, 4998897, 6665196, 9997794, 19995588]

約数ペア:

[(1, 19995588), (2, 9997794), (3, 6665196), (4, 4998897), (6, 3332598), (9, 2221732), (12, 1666299), (18, 1110866), (36, 555433), (71, 281628), (142, 140814), (213, 93876), (284, 70407), (426, 46938), (639, 31292), (852, 23469), (1278, 15646), (2556, 7823)]