256520138

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{21787}}^1$

素因数の和:21854

約数の個数: 24

約数和(自身を含む): 455456352

約数和(自身を除く): 198936214

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 841, 1682, 5887, 11774, 21787, 43574, 152509, 305018, 631823, 1263646, 4422761, 8845522, 18322867, 36645734, 128260069, 256520138]

約数ペア:

[(1, 256520138), (2, 128260069), (7, 36645734), (14, 18322867), (29, 8845522), (58, 4422761), (203, 1263646), (406, 631823), (841, 305018), (1682, 152509), (5887, 43574), (11774, 21787)]