20077775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1055

約数の個数: 24

約数和(自身を含む): 26843520

約数和(自身を除く): 6765745

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 983, 1075, 4085, 4915, 18677, 20425, 24575, 42269, 93385, 211345, 466925, 803111, 1056725, 4015555, 20077775]

約数ペア:

[(1, 20077775), (5, 4015555), (19, 1056725), (25, 803111), (43, 466925), (95, 211345), (215, 93385), (475, 42269), (817, 24575), (983, 20425), (1075, 18677), (4085, 4915)]