21000966567

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{113089}}^1$

素因数の和:113375

約数の個数: 32

約数和(自身を含む): 33004185600

約数和(自身を除く): 12003219033

約数列:

[1, 3, 7, 21, 37, 111, 239, 259, 717, 777, 1673, 5019, 8843, 26529, 61901, 113089, 185703, 339267, 791623, 2374869, 4184293, 12552879, 27028271, 29290051, 81084813, 87870153, 189197897, 567593691, 1000046027, 3000138081, 7000322189, 21000966567]

約数ペア:

[(1, 21000966567), (3, 7000322189), (7, 3000138081), (21, 1000046027), (37, 567593691), (111, 189197897), (239, 87870153), (259, 81084813), (717, 29290051), (777, 27028271), (1673, 12552879), (5019, 4184293), (8843, 2374869), (26529, 791623), (61901, 339267), (113089, 185703)]