20983613

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 26123328

約数和(自身を除く): 5139715

約数列:

[1, 7, 23, 43, 49, 161, 301, 433, 989, 1127, 2107, 3031, 6923, 9959, 18619, 21217, 48461, 69713, 130333, 428237, 487991, 912331, 2997659, 20983613]

約数ペア:

[(1, 20983613), (7, 2997659), (23, 912331), (43, 487991), (49, 428237), (161, 130333), (301, 69713), (433, 48461), (989, 21217), (1127, 18619), (2107, 9959), (3031, 6923)]