221411440

素因数分解:

$2^4\times 5^1\times {\mathrm{2767643}}^1$

素因数の和:2767656

約数の個数: 20

約数和(自身を含む): 514781784

約数和(自身を除く): 293370344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2767643, 5535286, 11070572, 13838215, 22141144, 27676430, 44282288, 55352860, 110705720, 221411440]

約数ペア:

[(1, 221411440), (2, 110705720), (4, 55352860), (5, 44282288), (8, 27676430), (10, 22141144), (16, 13838215), (20, 11070572), (40, 5535286), (80, 2767643)]