20649515

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 26729808

約数和(自身を除く): 6080293

約数列:

[1, 5, 23, 37, 115, 185, 211, 529, 851, 1055, 2645, 4255, 4853, 7807, 19573, 24265, 39035, 97865, 111619, 179561, 558095, 897805, 4129903, 20649515]

約数ペア:

[(1, 20649515), (5, 4129903), (23, 897805), (37, 558095), (115, 179561), (185, 111619), (211, 97865), (529, 39035), (851, 24265), (1055, 19573), (2645, 7807), (4255, 4853)]