216812701

素因数分解:

$7^4\times {\mathrm{73}}^1\times {\mathrm{1237}}^1$

素因数の和:1338

約数の個数: 20

約数和(自身を含む): 256605212

約数和(自身を除く): 39792511

約数列:

[1, 7, 49, 73, 343, 511, 1237, 2401, 3577, 8659, 25039, 60613, 90301, 175273, 424291, 632107, 2970037, 4424749, 30973243, 216812701]

約数ペア:

[(1, 216812701), (7, 30973243), (49, 4424749), (73, 2970037), (343, 632107), (511, 424291), (1237, 175273), (2401, 90301), (3577, 60613), (8659, 25039)]