20732145

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 39256128

約数和(自身を除く): 18523983

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 67, 105, 147, 201, 245, 335, 421, 469, 735, 1005, 1263, 1407, 2105, 2345, 2947, 3283, 6315, 7035, 8841, 9849, 14735, 16415, 20629, 28207, 44205, 49245, 61887, 84621, 103145, 141035, 197449, 309435, 423105, 592347, 987245, 1382143, 2961735, 4146429, 6910715, 20732145]

約数ペア:

[(1, 20732145), (3, 6910715), (5, 4146429), (7, 2961735), (15, 1382143), (21, 987245), (35, 592347), (49, 423105), (67, 309435), (105, 197449), (147, 141035), (201, 103145), (245, 84621), (335, 61887), (421, 49245), (469, 44205), (735, 28207), (1005, 20629), (1263, 16415), (1407, 14735), (2105, 9849), (2345, 8841), (2947, 7035), (3283, 6315)]