20924715

素因数分解:

$3^1\times 5^1\times 7^5\times {\mathrm{83}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 39529728

約数和(自身を除く): 18605013

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 83, 105, 147, 245, 249, 343, 415, 581, 735, 1029, 1245, 1715, 1743, 2401, 2905, 4067, 5145, 7203, 8715, 12005, 12201, 16807, 20335, 28469, 36015, 50421, 61005, 84035, 85407, 142345, 199283, 252105, 427035, 597849, 996415, 1394981, 2989245, 4184943, 6974905, 20924715]

約数ペア:

[(1, 20924715), (3, 6974905), (5, 4184943), (7, 2989245), (15, 1394981), (21, 996415), (35, 597849), (49, 427035), (83, 252105), (105, 199283), (147, 142345), (245, 85407), (249, 84035), (343, 61005), (415, 50421), (581, 36015), (735, 28469), (1029, 20335), (1245, 16807), (1715, 12201), (1743, 12005), (2401, 8715), (2905, 7203), (4067, 5145)]