20164825

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 25998336

約数和(自身を除く): 5833511

約数列:

[1, 5, 25, 41, 103, 191, 205, 515, 955, 1025, 2575, 4223, 4775, 7831, 19673, 21115, 39155, 98365, 105575, 195775, 491825, 806593, 4032965, 20164825]

約数ペア:

[(1, 20164825), (5, 4032965), (25, 806593), (41, 491825), (103, 195775), (191, 105575), (205, 98365), (515, 39155), (955, 21115), (1025, 19673), (2575, 7831), (4223, 4775)]