81084340

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{45553}}^1$

素因数の和:45651

約数の個数: 24

約数和(自身を含む): 172194120

約数和(自身を除く): 91109780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 45553, 91106, 182212, 227765, 455530, 911060, 4054217, 8108434, 16216868, 20271085, 40542170, 81084340]

約数ペア:

[(1, 81084340), (2, 40542170), (4, 20271085), (5, 16216868), (10, 8108434), (20, 4054217), (89, 911060), (178, 455530), (356, 227765), (445, 182212), (890, 91106), (1780, 45553)]