221255980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1005709}}^1$

素因数の和:1005729

約数の個数: 24

約数和(自身を含む): 506877840

約数和(自身を除く): 285621860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1005709, 2011418, 4022836, 5028545, 10057090, 11062799, 20114180, 22125598, 44251196, 55313995, 110627990, 221255980]

約数ペア:

[(1, 221255980), (2, 110627990), (4, 55313995), (5, 44251196), (10, 22125598), (11, 20114180), (20, 11062799), (22, 10057090), (44, 5028545), (55, 4022836), (110, 2011418), (220, 1005709)]