81842620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{45979}}^1$

素因数の和:46077

約数の個数: 24

約数和(自身を含む): 173804400

約数和(自身を除く): 91961780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 45979, 91958, 183916, 229895, 459790, 919580, 4092131, 8184262, 16368524, 20460655, 40921310, 81842620]

約数ペア:

[(1, 81842620), (2, 40921310), (4, 20460655), (5, 16368524), (10, 8184262), (20, 4092131), (89, 919580), (178, 459790), (356, 229895), (445, 183916), (890, 91958), (1780, 45979)]