20638731

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^3\times {\mathrm{59}}^1$

素因数の和:136

約数の個数: 32

約数和(自身を含む): 31276800

約数和(自身を除く): 10638069

約数列:

[1, 3, 17, 19, 51, 57, 59, 177, 323, 361, 969, 1003, 1083, 1121, 3009, 3363, 6137, 6859, 18411, 19057, 20577, 21299, 57171, 63897, 116603, 349809, 362083, 404681, 1086249, 1214043, 6879577, 20638731]

約数ペア:

[(1, 20638731), (3, 6879577), (17, 1214043), (19, 1086249), (51, 404681), (57, 362083), (59, 349809), (177, 116603), (323, 63897), (361, 57171), (969, 21299), (1003, 20577), (1083, 19057), (1121, 18411), (3009, 6859), (3363, 6137)]