20031319

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 26265600

約数和(自身を除く): 6234281

約数列:

[1, 7, 11, 37, 77, 79, 89, 259, 407, 553, 623, 869, 979, 2849, 2923, 3293, 6083, 6853, 7031, 20461, 23051, 32153, 36223, 49217, 77341, 225071, 253561, 260147, 541387, 1821029, 2861617, 20031319]

約数ペア:

[(1, 20031319), (7, 2861617), (11, 1821029), (37, 541387), (77, 260147), (79, 253561), (89, 225071), (259, 77341), (407, 49217), (553, 36223), (623, 32153), (869, 23051), (979, 20461), (2849, 7031), (2923, 6853), (3293, 6083)]